Canna indica: Difference between revisions

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'''''Canna indica''''', commonly known as '''Indian shot''',<ref name=PLANTS>{{PLANTS | symbol = CAIN19 | taxon = Canna indica | access-date = 23 March 2020 }}</ref> '''African arrowroot''', '''edible canna''', '''purple arrowroot''', '''Sierra Leone arrowroot''',<ref name=GRIN>{{GRIN | ''Canna indica'' L. | 8858 | access-date = 12 Aug 2016 }}</ref> is a plant species in the family [[Cannaceae]]. It is native to much of South America, Central America, the West Indies, and Mexico. It is also naturalized in the southeastern United States ([[Florida]], [[Texas]], [[Louisiana]], and [[South Carolina]]), and much of Europe, [[sub-Saharan Africa]], Southeast Asia, and Oceania.<ref name=GRIN/> ''Canna indica'' ('''achira''' in Latin America,<ref name=GRIN/> '''cana-da-índia''' in Brazil) has been a minor food crop cultivated by [[indigenous peoples of the Americas]] for thousands of years.<ref>Flora of North America Editorial Committee, e. 2000. Magnoliophyta: Alismatidae, Arecidae, Commelinidae (in part), and Zingiberidae. Fl. N. Amer. 22: i-xxiii, 1-352.</ref><ref>Hokche, O., PE Berry & O. Huber. (eds.) 2008. New Cat. Fl. Vasc. Venezuela 1-860. Botanical Institute of Venezuela Foundation, Caracas.</ref>
'''''Canna indica''''', commonly known as '''Indian shot''',<ref name=PLANTS>{{PLANTS | symbol = CAIN19 | taxon = Canna indica | access-date = 23 March 2020 }}</ref> '''African arrowroot''', '''edible canna''', '''purple arrowroot''', '''Sierra Leone arrowroot''',<ref name=GRIN>{{GRIN | ''Canna indica'' L. | 8858 | access-date = 12 Aug 2016 }}</ref> is a plant species in the family [[Cannaceae]]. It is native to much of South America, Central America, the West Indies, and Mexico. It is also naturalized in the southeastern United States ([[Florida]], [[Texas]], [[Louisiana]], and [[South Carolina]]), and much of Europe, [[sub-Saharan Africa]], Southeast Asia, and Oceania.<ref name=GRIN/> ''Canna indica'' ('''achira''' in Hispanic America,<ref name=GRIN/> '''cana-da-índia''' in Brazil) has been a minor food crop cultivated by [[indigenous peoples of the Americas]] for thousands of years.<ref>Flora of North America Editorial Committee, e. 2000. Magnoliophyta: Alismatidae, Arecidae, Commelinidae (in part), and Zingiberidae. Fl. N. Amer. 22: i-xxiii, 1-352.</ref><ref>Hokche, O., PE Berry & O. Huber. (eds.) 2008. New Cat. Fl. Vasc. Venezuela 1-860. Botanical Institute of Venezuela Foundation, Caracas.</ref>


==Description==
==Description==
''Canna indica'' is a [[Perennial plant|perennial]] growing to between 0.5 m and 2.5 m, depending on the variety. It is [[Hardiness zone|hardy to zone 10]] and is frost tender. The flowers are [[hermaphrodite]].<ref>Johnson's Gardeners Dictionary, 1856</ref><ref name=chate>Chaté, E. (1867) Le Canna, son histoire, son culture. Libraire Centrale d'Agriculture et de Jardinage.</ref><ref name=khoshoo>[[Triloki Nath Khoshoo|Khoshoo, T.N.]] & Guha, I. - Origin and Evolution of Cultivated Cannas. Vikas Publishing House.</ref><ref name=cooke>Cooke, Ian, 2001. The Gardener's Guide to Growing cannas, Timber Press. {{ISBN|0-88192-513-6}}</ref> ''Canna indica'' sps. can be used for the treatment of industrial waste waters through constructed wetlands. It is effective for the removal of high organic load,  color and chlorinated organic compounds from paper mill wastewater.<ref>Choudhary et al. (2011) Performance of constructed wetland for the treatment of pulp and paper mill wastewater,  Proceedings of World Environmental and Water Resources Congress 2011: Bearing Knowledge for Sustainability, Palm Springs, California, USA, p-4856-4865, 22–26 May.</ref>
''Canna indica'' is a [[Perennial plant|perennial]] growing to between {{Convert|0.5 and 2.5|m|ft|abbr=off|frac=2}}, depending on the variety. It is [[Hardiness zone|hardy to zone 10]] and is frost tender. The flowers are [[hermaphrodite]].<ref>Johnson's Gardeners Dictionary, 1856</ref><ref name=chate>Chaté, E. (1867) Le Canna, son histoire, son culture. Libraire Centrale d'Agriculture et de Jardinage.</ref><ref name=khoshoo>[[Triloki Nath Khoshoo|Khoshoo, T.N.]] & Guha, I. - Origin and Evolution of Cultivated Cannas. Vikas Publishing House.</ref><ref name=cooke>Cooke, Ian, 2001. The Gardener's Guide to Growing cannas, Timber Press. {{ISBN|0-88192-513-6}}</ref>
[[File:Canna indica (C. discolor) Edwards's Bot. Reg. 15. 1231. 1829.jpg|thumb|left|''Canna indica'' (artist: (M. Hart)]] It forms branched [[rhizome]]s 60&nbsp;cm long that are divided into bulbous segments and covered in two lines by pale green or purple flaky leaves. The very large grains of starch stored there can supposedly be seen with the naked eye. Cannae indicae reach, depending on the variety, stature heights of up to about 2 meters. They form an upright, unbranched stem or the overlapping [[leaf sheath]]s form a pseudo trunk.<ref>Funk, VA, PE Berry, S. Alexander, TH Hollowell & CL Kelloff. 2007. Checklist of the Plants of the Guiana Shield (Venezuela: Amazonas, Bolivar, Delta Amacuro, Guyana, Surinam, French Guiana). Contr. US Natl. Herb. 55: 1-584.</ref>


The alternate and spiral or two-line arranged, very large, simple leaves are divided into leaf sheaths, short petioles and leaf blades. The leaf blade has a length of 30 to 60&nbsp;cm and a width of 10 to 20&nbsp;cm. The parallel leaf veins arise from the midrib (not typical of [[monocot]]s). The leaves are broad, green or [[wikt:violet|violet]] green, with petiolesshort and elliptical sheets, which can measure 30 to 60&nbsp;cm long and 10 to 25&nbsp;cm wide, with the base obtuse or narrowly cuneate and the [[Apical meristem|apex]] is shortly acuminate or sharp. The surface of the rhizome is carved by transverse grooves, which mark the base of scales that cover it; from the lower part white and apex rootlets emerge, where there are numerous buds, the leaves sprout, the floral stem and the stems.<ref>Flora of China Editorial Committee. 2000. Flora of China (Flagellariaceae through Marantaceae). 24: 1-431. In CY Wu, PH Raven & DY Hong (eds.) Fl. China. Science Press & Missouri Botanical Garden Press, Beijing & St. Louis.</ref>
It forms branched [[rhizome]]s {{Convert|60|cm|abbr=off}} long<ref name=":1" /> that are divided into bulbous segments and covered in two lines by pale green or purple flaky [[leaves]]. The very large grains of [[starch]] stored there can supposedly be seen with the naked eye. The plants form an upright, unbranched stem or the overlapping [[leaf sheath]]s form a pseudo trunk.<ref>Funk, VA, PE Berry, S. Alexander, TH Hollowell & CL Kelloff. 2007. Checklist of the Plants of the Guiana Shield (Venezuela: Amazonas, Bolivar, Delta Amacuro, Guyana, Surinam, French Guiana). Contr. US Natl. Herb. 55: 1-584.</ref>


===Flowers===
The alternate and spiral or two-line arranged, very large, simple leaves are divided into leaf sheaths, short petioles and leaf blades. The leaf blade has a length of {{Convert|30 to 60|cm|abbr=on}} and a width of {{Convert|10 to 20|cm|abbr=on|frac=2}}. The parallel leaf veins arise from the midrib (not typical of [[monocot]]s). The leaves are broad, green or [[wikt:violet|violet]] green, with petiolesshort and elliptical sheets, which can measure 30 to 60&nbsp;cm long and 10 to 25&nbsp;cm wide, with the base obtuse or narrowly cuneate and the [[Apical meristem|apex]] is shortly acuminate or sharp. The surface of the rhizome is carved by transverse grooves, which mark the base of scales that cover it; from the lower part white and apex rootlets emerge, where there are numerous buds, the leaves sprout, the floral stem and the stems.<ref>Flora of China Editorial Committee. 2000. Flora of China (Flagellariaceae through Marantaceae). 24: 1-431. In CY Wu, PH Raven & DY Hong (eds.) Fl. China. Science Press & Missouri Botanical Garden Press, Beijing & St. Louis.</ref>
The [[hermaphrodite]], mostly large flowers are [[zygomorph]]ic and threefold. On pedicels, they are 0.2–1&nbsp;cm long, red or yellow-orange, except in some cultivars, 4.5–7.5&nbsp;cm long, with the sepals being closely triangular, 1–1.7&nbsp;cm long and the petals erect, 4–6.5&nbsp;cm long. The tube is 1.5–2&nbsp;cm long. The bracts are designed differently. The three free [[sepal]]s are usually green. The three petals are green or have depending on the variety shades of yellow about orange and red to pink. The base of the petals is fused with the staminodien to a stamen column. There are two circles, each with originally three stamens present. The petals and staminodes are usually yellow to red. The three carpels are at a constant under (syncarp) ovary adherent which has a soft-spiky surface and many central angle constant ovules contains. The pollen is deposited on the [[abaxial]] (off-axis) surface of the [[stylus]].
 
The hermaphrodite, mostly large flowers are [[zygomorph]]ic and threefold. On pedicels, they are {{Convert|0.2–1|cm|abbr=on|frac=8}} long, red or yellow-orange, except in some cultivars, {{Convert|4.5–7.5|cm|abbr=on|frac=2}} long, with the sepals being closely triangular, {{Convert|1–1.7|cm|abbr=on|frac=4}} long and the petals erect, 4–6.5&nbsp;cm long. The tube is 1.5–2&nbsp;cm long. The bracts are designed differently. The three free [[sepal]]s are usually green. The three petals are green or have depending on the variety shades of yellow about orange and red to pink. The base of the petals is fused with the staminodien to a stamen column. There are two circles, each with originally three stamens present. The petals and staminodes are usually yellow to red. The three carpels are at a constant under (syncarp) ovary adherent which has a soft-spiky surface and many central angle constant ovules contains. The pollen is deposited on the [[abaxial]] (off-axis) surface of the [[stylus]].


The [[pollination]] mechanism is very specialised and the pollination is done by insects. The insects pick up the pollen from the flattened style. In their homeland, the bloom by humming pollinated. There they bloom in the months of August to October. The fruits are [[ellipsoid]] capsules to globose, warty, 1.5 to 3&nbsp;cm long, chestnut coloured, with a large amount of black and very hard seeds.<ref>Nobuyuki Tanaka: "Taxonomic revision of the Cannaceae family in the New World and Asia". In: ''Makinoa'' , 1, 2001, pp. 1–74.</ref>
The [[pollination]] mechanism is very specialised and the pollination is done by insects. The insects pick up the pollen from the flattened style. In their homeland, the bloom by humming pollinated. There they bloom in the months of August to October. The fruits are [[ellipsoid]] capsules to globose, warty, 1.5 to 3&nbsp;cm long, chestnut coloured, with a large amount of black and very hard seeds.<ref>Nobuyuki Tanaka: "Taxonomic revision of the Cannaceae family in the New World and Asia". In: ''Makinoa'' , 1, 2001, pp. 1–74.</ref>


===Seeds===
The seeds are small, globular, black pellets, hard and dense enough to sink in water.<ref name=khoshoo/> They resemble [[shotgun]] pellets giving rise to the plant's common name of Indian shot.<ref name=PLANTS/><ref name=BBC>[http://www.bbc.co.uk/programmes/p00p14q0 Seeds fired from a shotgun], BBC, 9 February 2012. Retrieved 27 August 2012.</ref> The seeds are hard enough to shoot through wood and still survive and later germinate. According to the [[BBC]], "The story goes that during the [[Indian Mutiny]] of the 19th century, soldiers used the seeds of a ''Canna indica'' when they ran out of bullets."<ref name=BBC/>
[[File:Canna indica (wild species) seeds.JPG|thumb|left|Seeds]]
The seeds are small, globular, black pellets, hard and dense enough to sink in water.<ref name=khoshoo/> They resemble [[shotgun]] pellets giving rise to the plant's common name of Indian shot.<ref name=PLANTS/><ref name=BBC>[http://www.bbc.co.uk/programmes/p00p14q0 Seeds fired from a shotgun], BBC, 9 February 2012. Retrieved 27 August 2012.</ref> The seeds are hard enough to shoot through wood and still survive and later germinate. According to the [[BBC]] "The story goes that during the [[Indian Mutiny]] of the 19th century, soldiers used the seeds of a ''Canna indica'' when they ran out of bullets."<ref name=BBC/>


The seeds are widely used for jewellery. The seeds are also used as the mobile elements of the [[kayamb]], a [[musical instrument]] from [[Réunion]], as well as the [[hosho (instrument)|hosho]], a [[gourd]] [[rattle (percussion instrument)|rattle]] from [[Zimbabwe]], where the seeds are known as ''"hota"'' seeds.<ref>Maas-van de Kamer, H. & PJM Maas. 2003. Cannaceae. In: Manual of Plants of Costa Rica, BE Hammel, MH Grayum, C. Herrera & N. Zamora (eds.). Monogr. Syst. Bot. Missouri Bot. Gard. 92: 384-385.</ref>
{{gallery|mode=packed
|Canna indica (C. discolor) Edwards's Bot. Reg. 15. 1231. 1829.jpg|Illustration by M.&nbsp;Hart
|Canna Indica Leafs.jpg|Leaves
|Canna indica.jpg|Flowers and capsules
|Canna indica (wild species) seeds.JPG|Seeds
}}


==Taxonomy==
==Taxonomy==
[[File:Canna_indica.jpg|thumb|Flowers and capsules]]
[[File:Canna edulis fruit.jpg|thumb|upright|''Canna edulis'' fruit]]
[[File:Canna edulis fruit.jpg|thumb|''Canna edulis'' fruit]]
[[File:Canna indica var. flava (11).jpg|thumb|Flower of ''C.&nbsp;indica'' var. ''flava'']]
[[File:Canna indica var. flava (11).jpg|thumb|right|Flower of ''Canna indica'' var. ''flava'']]
[[File:Cann indica flower.jpg|thumb|upright|''C. indica'', commonly known as Indian shot, Tagore Park Mahe District, [[Puducherry UT]], India]]
[[File:Cann indica flower.jpg|thumb|Canna indica, commonly known as Indian shot photo taken at Tagore Park Mahe District, Puducherry UT, India]]
 
In the last three decades of the 20th century, ''Canna'' species have been categorised by two different [[taxonomists]], [[Paulus Johannes Maria Maas]] from the Netherlands and [[Nobuyuki Tanaka]] from Japan.  Maas regards ''C''. ''coccinea'', ''C''. ''compacta'', ''C''. ''discolor'', ''C''. ''patens'' and ''C''. ''speciosa'' as synonyms or varieties of ''C''. ''indica'', while Tanaka recognises several additional varieties of ''C''. ''indica''.
In the last three decades of the 20th century, ''Canna'' species have been categorised by two different [[taxonomists]], [[Paulus Johannes Maria Maas]] from the Netherlands and [[Nobuyuki Tanaka]] from Japan.  Maas regards ''C.&nbsp;coccinea'', ''C.&nbsp;compacta'', ''C.&nbsp;discolor'', ''C.&nbsp;patens'' and ''C.&nbsp;speciosa'' as synonyms or varieties of ''C.&nbsp;indica'', while Tanaka recognises several additional varieties of ''C.&nbsp;indica''.


*''Canna indica'' var. ''indica'' L.
*''Canna indica'' var. ''indica'' L.
:A medium sized species; green foliage, oblong shaped, spreading habit; triangular flower stems, coloured green; spikes of flowers are erect, self-coloured red, staminodes are long and narrow, edges regular, petals red, partial self-cleaning; fertile both ways, self-pollinating and also true to type, capsules globose; rhizomes are thick, up to 3 cm in diameter, coloured purple; tillering is prolific. Introduced by Linnaeus.<ref name=khoshoo/><ref name=tanaka>Tanaka, N. 2001. Taxonomic revision of the family Cannaceae in the New World and Asia. Makinoa ser. 2, 1:34–43.</ref>
:A medium sized species; green foliage, oblong shaped, spreading habit; triangular flower stems, coloured green; spikes of flowers are erect, self-coloured red, staminodes are long and narrow, edges regular, petals red, partial self-cleaning; fertile both ways, self-pollinating and also true to type, capsules globose; rhizomes are thick, up to 3 cm in diameter, coloured purple; tillering is prolific. Introduced by Linnaeus.<ref name=khoshoo/><ref name=tanaka>Tanaka, N. 2001. Taxonomic revision of the family Cannaceae in the New World and Asia. Makinoa ser. 2, 1:34–43.</ref>
*''Canna indica'' var. ''flava'' (Roscoe ex Baker) Nb. Tanaka
*''Canna indica'' var. ''flava'' (Roscoe ex Baker) Nb. Tanaka
:Yellow bloom. Many plants previously offered as ''C. lutea'' fall into this subspecies.<ref name=tanaka/>
:Yellow bloom. Many plants previously offered as ''C.&nbsp;lutea'' fall into this subspecies.<ref name=tanaka/>
*''Canna indica'' var. ''maculata'' (Hook) Nb. Tanaka
*''Canna indica'' var. ''maculata'' (Hook) Nb. Tanaka
:A medium sized species; green foliage, ovoid shaped, branching habit; spikes of flowers are erect, yellow with red spots, staminodes are long and narrow, edges regular, petals green, fully self-cleaning, low bloomer; fertile both ways, self-pollinating and also true to type, capsules globose; rhizomes are thick, up to 3 cm in diameter, coloured white and pink; tillering is average. Introduced by Hook.. Many plants previously offered as ''Canna lutea'' fall into this subspecies.<ref name=tanaka/>
:A medium sized species; green foliage, ovoid shaped, branching habit; spikes of flowers are erect, yellow with red spots, staminodes are long and narrow, edges regular, petals green, fully self-cleaning, low bloomer; fertile both ways, self-pollinating and also true to type, capsules globose; rhizomes are thick, up to 3 cm in diameter, coloured white and pink; tillering is average. Introduced by Hook.. Many plants previously offered as ''C.&nbsp;lutea'' fall into this subspecies.<ref name=tanaka/>
*''Canna indica'' var. ''sanctae rosea'' (Kraenzl) Nb. Tanaka
*''Canna indica'' var. ''sanctae rosea'' (Kraenzl) Nb. Tanaka
:A small species; green foliage, oval shaped, white margin, branching habit; spikes of flowers are erect, self-coloured pink, staminodes are long and narrow, edges regular, labellum is pink, stamen is pink, style is pink, petals red with farina, fully self-cleaning; fertile both ways, self-pollinating and also true to type, capsules ellipsoid; rhizomes are thick, up to 3 cm in diameter, coloured white and pink; tillering is prolific.<ref name=tanaka/>
:A small species; green foliage, oval shaped, white margin, branching habit; spikes of flowers are erect, self-coloured pink, staminodes are long and narrow, edges regular, labellum is pink, stamen is pink, style is pink, petals red with farina, fully self-cleaning; fertile both ways, self-pollinating and also true to type, capsules ellipsoid; rhizomes are thick, up to 3 cm in diameter, coloured white and pink; tillering is prolific.<ref name=tanaka/>
Line 135: Line 138:
:This variety is distinguishable from ''C. indica'' var. ''indica'' by having purple-red-margined leaves, purple-red fruits and slightly corm-like thickened terrestrial stem at the base. Additionally to this, there are normally two staminodes, recurved backwards, and the stamen is often strongly reflexed at the apex. These characteristics are fairly stable in this taxon. Sometimes, this variety is confused with ''C''. ''discolor'' Lindl., from which it differs in much smaller, deep-red coloured flowers, short and slender rhizomes and chromosome numbers (2n=27 in ''C''. ''discolor'' and 2n=18 in ''C''. ''indica'' var. ''warszewiczii'')<ref name=tanaka/>
:This variety is distinguishable from ''C. indica'' var. ''indica'' by having purple-red-margined leaves, purple-red fruits and slightly corm-like thickened terrestrial stem at the base. Additionally to this, there are normally two staminodes, recurved backwards, and the stamen is often strongly reflexed at the apex. These characteristics are fairly stable in this taxon. Sometimes, this variety is confused with ''C''. ''discolor'' Lindl., from which it differs in much smaller, deep-red coloured flowers, short and slender rhizomes and chromosome numbers (2n=27 in ''C''. ''discolor'' and 2n=18 in ''C''. ''indica'' var. ''warszewiczii'')<ref name=tanaka/>


==Uses==
== Distribution and habitat ==
===As food===
''Canna indica'' is native to South America: Colombia, Venezuela, Ecuador, Peru, Brazil, Uruguay and Argentina as well as the West Indies and Central America.<ref>illeen, TJ & TS Schulenberg. 1998. A biological assessment of Noel Kempff Mercado National Park, Bolivia. RAP Working Papers 10: 1–372.</ref>
The starch is easily digestible and therefore well suited as a health and baby food. The tubers can be eaten raw or cooked. The starch is also suitable for baking. In South America, the leaves are used to wrap [[pastries]] ([[tamales]], humitas, quimbolitos, juanes, etc.), similar to banana leaves or [[maize]] leaves. In some areas, the leaves are fed to [[livestock]]. The round seeds are pierced in some areas and used as pearls. They are also used as a filling of rattles. From the Indians, the seeds were previously used as gold weights, similar to the seeds of [[Ceratonia siliqua]] (carob), as they have a constant weight.<ref>PF Yeo: Secondary pollen presentation: Form, function and evolution. In: Pl. Syst. Evol., Suppl. 6, 1993, pp. 204–208.</ref>
 
In modern times, ''C. indica'' is reportedly naturalized in Austria, Portugal, Spain, [[Azores]], [[Canary Islands]], [[Cape Verde]], [[Madeira]], most of tropical Africa, [[Ascension Island]], [[St. Helena]], Madagascar, China, Japan, Taiwan, the [[Bonin Islands]], India, Nepal, Sri Lanka, Cambodia, Laos, Thailand, Vietnam, Burma, [[Java]], Malaysia, the Philippines, [[Christmas Island]], the [[Bismarck Archipelago]], [[Norfolk Island]], [[New South Wales]], [[Queensland]], Fiji, Tonga, Vanuatu, Kiribati, the [[Cook Islands]], the [[Society Islands]], the [[Caroline Islands]] and [[Hawaii]].<ref>{{WCSP|223906|accessdate=30 March 2018}}</ref>


The ''C. indica'' (achira) rhizomes are large, up to {{convert|60|cm|inch}} in length, and edible.<ref>FAO, "''[http://ecocrop.fao.org/ecocrop/srv/en/cropView?id=2228 Canna edulis] {{Webarchive|url=https://web.archive.org/web/20161005090156/http://ecocrop.fao.org/ecocrop/srv/en/cropView?id=2228 |date=2016-10-05 }}''", accessed 23 Feb 2016.</ref> They can be eaten raw, but are usually baked. Cooked, the rhizomes become translucent, mucilaginous, and sweet. Starch is produced by grinding or pounding the roots and soaking them in water, separating the starch granules from fibers in the roots.  The starch granules of ''C. indica'' are also translucent and the largest known from any plant. The starch is occasionally marketed commercially as "arrowroot", a name also applied to the starch of other similar roots crops such as ''[[Maranta arundinacea]]''.<ref>''Lost Crops of the Incas: Little-known Plants of the Andes with Promise for Worldwide Cultivation'', National Academies Press, Nation Research Council, p. 27, [http://www.nap.edu/catalog/1398.html], accessed 22 Feb 2016.</ref> It was an ingredient in mid-nineteenth century recipes such as cakes<ref>{{Cite book|title=Beeton's Book of Household Management|last=Beeton|first=Isabella|publisher=S. O. Beeton|year=1859–61|isbn=1-870962-15-X|location=England|pages=863, 864}}</ref> and was called '''tout-les-mois'''.<ref>{{Cite web|url=http://www.dictionary.com/browse/tous-les-mois|title=Dictionary.com|access-date=2016-07-07}}</ref>[[File:Canna Indica Leafs.jpg|thumb|right|''Canna indica'' leaves]]
Canna can be cultivated from sea level to {{Convert|2,700|m|abbr=on}} above [[sea level]], but thrives in temperate, tropical or subtropical mountain climates, between {{Convert|1,000 and 2,000|m|abbr=on}} above sea level (in humid tropical climates for higher elevations) at a mean temperature of 14 to 27&nbsp;°C.<ref name="thefern" /> The plant prefers a mean annual rainfall between {{Convert|1,000–4,500|mm|ft|frac=2}}, but it can tolerate 500–5,000&nbsp;mm per year.<ref name="aujardin2" /> Canna prefers light sandy-loamy soils, but can also grow on heavy soils, as far as they are not wet. It is indifferent to [[soil pH]]. For seeds to germinate, they must soak in water for two to three days.<ref>Idárraga-Piedrahita, A., RDC Ortiz, R. Callejas Posada & M. Merello. (eds.) 2011. Fl. Antioquia: Cat. 2: 9-939. University of Antioquia, Medellín.</ref>


The [[Spanish people|Spanish]] took notice of achira in 1549 when it was mentioned as one of four root crops being grown for food by the people of the Chuquimayo valley ([[Jaén Province, Peru|Jaén province]]) of Peru. The other three were sweet potato (''[[Ipomoea batatas]]''), cassava (''[[Manihot esculenta]]''), and racacha (''[[Arracacia xanthorrhiza]]''). In 1609, achira was described by a Spanish visitor to [[Cusco|Cusco, Peru]].<ref>Ugent, Donald, Pozorski, Shelia, and Pozorski, Thomas (Oct-Dec 1984), "New Evidence for Ancient Cultivation of Canna edulis in Peru", ''Economic Botany'', Vol 38, No. 4, p. 418</ref>  In modern times, achira is rarely grown for food, although in the 1960s it was still an important crop in [[Paruro Province]] on the upper [[Apurimac River]] near Cusco. There, at elevations of up to {{convert|2600|m|ft}}, achira is cultivated and harvested, especially to be eaten during the [[Corpus Christi (feast)|Festival of Corpus Christi]] in May or June. The achira rhizomes are wrapped with achira leaves and placed in a pit with heated rocks. The pit is then filled with dirt and the achira is slowly baked underground.<ref>Gade, Daniel W. (1966), "Achira, the Edible Canna, Its Cultivation and Use in the Peruvian Andes", ''Economic Botany'', Vol 20, No. 4, pp. 409–413</ref>
==Ecology==
===Diseases===
Cannas suffer from relatively few diseases compared to other species. Nevertheless, some diseases have been recorded to affect ''C.&nbsp;indica''. One of them is Canna rust (''[[Puccinia thaliae]]''), a fungus that causes orange spots on the leaves. In addition, plant viruses occur: [[Hippeastrum mosaic virus]], [[Tomato aspermy virus]], [[Canna yellow mottle virus]] and [[Canna yellow streak virus]] which can cause mild or strong symptoms from streaked leaves, stunted growth to distorted blooms. Furthermore, there is [[Botrytis (fungus)]], a mold that affects the flowers.<ref name="Reddy P. P.">{{cite journal |last1=Reddy |first1=P. P. |title=Reddy P.P. (2015) Achira, Canna edulis. In: Plant Protection in Tropical Root and Tuber Crops. Springer, New Delhi. |publisher=Springer |doi=10.1007/978-81-322-2389-4_9}}</ref>
 
Many different Canna varieties exist, and some of them are resistant to a certain type of disease. To prevent mold, the soil should be well-drained without too much soil moisture or stagnating water.<ref name="Reddy P. P." /> To diminish the risk of spreading diseases, dead and infected leaves should be removed.<ref name=":0">{{cite journal |last1=Xiyou |first1=Zhang |date=2011 |title=芭蕉芋高产栽培技术 |journal=Xiandai Nongye Keji |doi=10.3969/j.issn.1007-5739.2011.10.074}}</ref>


In the 1950s, ''Canna indica'' was introduced to [[China]] as a perennial ornamental crop. It was mainly planted in parks and home gardens in [[Guizhou]] for ornamental purposes. From the late 1950s to the early 1960s, China suffered from a severe food shortage, known as the [[Great Chinese Famine]]. During this time, weeds, tree roots, tubers, etc., became an important food source. ''Canna indica'' was also part of this [[famine food]]. As a consequence, the plant became known as a food crop. Today, the rhizomes are processed to [[starch]], [[vermicelli]], [[white wine]], and [[ethanol]]. Due to the use as a food crop and relatively low diseases and pests pressure, ''Canna indica'' has become a characteristic crop for large-scale cultivation in China. The research in China mainly focuses on processing methods, and additionally, there are few studies on varieties and cultivation techniques.<ref name="Food">{{cite journal |last1=Zhengbang |first1=Zhou |title=Development Situation and Potentiality of Canna edulis in Guizhou |journal=Guizhou Agricultural Sciences |date=2009}}</ref>
===Pests===
The canna leaf roller moth (''[[Calpodes ethlius]]'') has been seen on ''Canna'' plants in the [[US]].<ref name="Cook">{{cite journal |last1=Cook |first1=I. |date=2001 |title=The gardener's guide to growing canna.}}</ref> It is a [[caterpillar]] known as the worst pest for this plant and primarily found in the Southern United States. This pest causes damages by laying its eggs in the bud of developing stalks. To protect the eggs from predators and insecticide, caterpillars use sticky webs to keep the leaves from unfurling. The pupate then feed on the leaves which can lead to losses of yield due to reduced photosynthesis.<ref name="Reddy P. P." />


The Achira rhizomes consist of 73% water. In addition to 24% starch, they still contain 1% protein, 0.6% crude fiber and 1.4% minerals.<ref>Vernon Hilton Heywood: ''Flowering Plants of the World'' , Basel-Boston-Stuttgart 1978.</ref>
The [[Japanese beetle]] (''Popillia japonica'') is another leaf ragging pest with mainly small consequences for Canna plants. This beetle feeds on the part of the leaves between the veins. In its originating region in Japan, it does not cause a lot of damages. However, in the US it has no natural predator and can cause serious damages on Cannas and other plants.<ref name="Reddy P. P." />


===As biodegradable plastics===
The bird cherry-oat aphid (''[[Rhopalosiphum padi]]'') has been recorded to affect stored rhizomes. Although this pest has not been causing severe damages yet, it can particularly affect plants grown in greenhouses and can be combatted with parasitical wasps. It is a more common pest on [[cereals]].<ref name="Reddy P. P." />
In [[China]], ''Canna indica'' starch and [[polyethylene]] are used as raw materials to produce [[biodegradable plastics]]. This type of plastics is affordable and can degrade completely into fertilizer for crop production in just a few months. The method for producing ''Canna indica'' plastics consists of fusing 60 - 80% of ''Canna indica'' starch and 20 - 40% of polyethylene uniformly at 240&nbsp;°C.<ref>{{Cite patent|country=CN|number=CN101798401B|title=芭蕉芋塑料及其生产方法|status=|pubdate=|gdate=2012|invent1=Chen|inventor1-first=Jun|url=http://www.zhangqiaokeyan.com/patent-detail/06120920003.html}} [in Mandarin]</ref>


==Domestication==
=== As an invasive species ===
''Canna indica'' (achira) has been cultivated by indigenous peoples of the Americas in tropical America for thousands of years. The place of the first domestication may have been the northern [[Andes]], as may be true of other similar root crops such as ''[[Calathea allouia]]'' and ''M. arundinacea''. The [[Cauca river]] valley of Colombia was a center of early domestication. Archaeological evidence has been found of the cultivation of achira in 3000 BCE by people of the [[Las Vegas culture]] of coastal Ecuador. As the Las Vegas region is arid and semiarid, achira was not likely a native plant, but imported from more humid climates.<ref>Piperno, Dolores R. (Oct 2011), "The Origins of Plant Cultivation and Domestication in the New World Tropics", ''Current Anthropology'', Vol 52, No. S4, pp. S457-S458. Downloaded from JSTOR.</ref> Achira was also being cultivated by 2000 BCE by the people of the [[Casma/Sechin culture]] in the extremely arid region of coastal [[Peru]], also an area in which achira was probably not native.<ref>Ugent et al, p. 417</ref>
''C. indica'' has been included in the [[Global Invasive Species Database]]<ref>{{Cite web |title=Canna Indica Factsheet |url=https://www.cabi.org/isc/datasheet/14575#tosummaryOfInvasiveness |url-status=live |archive-url=https://web.archive.org/web/20160304192523/http://www.cabi.org/isc/datasheet/14575 |archive-date=2016-03-04 |access-date=6 March 2021 |website=CABI Invasive Species Compendium}}</ref> and has been declared as invasive in the following places:
* [[South Africa]] where it is categorised as a category 1b Invader in terms of the National Environmental Management: Biodiversity Act (10/2004) list of Alien and Invasive Species<ref>{{Cite web |title=National Environmental Management: Biodiversity Act: Alien and Invasive Species Lists {{!}} South African Government |url=https://www.gov.za/documents/national-environmental-management-biodiversity-act-alien-and-invasive-species-lists-18-sep |access-date=2021-03-06 |website=www.gov.za}}</ref> which prohibits their cultivation, propagation, translocation and trade, and requires them to be removed and destroyed when found. This is because it competes with and replaces indigenous species, often in waterways and marshy areas.<ref>{{Cite web |last=Janey |title=Invasive Species South Africa - Protecting Biodiversity from Invasion - Indian shot {{!}} Canna indica |url=http://www.invasives.org.za/legislation/item/211-indian-shot-canna-indica |access-date=2021-03-06 |website=www.invasives.org.za |language=en-gb}}</ref> 
* Australia, regarded as a weed in [[New South Wales]] and South Eastern [[Queensland]]<ref>{{Cite web |title=NSW WeedWise |url=https://weeds.dpi.nsw.gov.au/Weeds/CannaLily |access-date=2021-03-06 |website=weeds.dpi.nsw.gov.au}}</ref>
* Pacific Islands, where it has been included in the list of plant threats to Pacific ecosystems<ref>{{Cite web |title=Canna indica: info from PIER (PIER species info) |url=http://www.hear.org/pier/species/canna_indica.htm |access-date=2021-03-06 |website=www.hear.org}}</ref> as a high-risk species
* [[Tanzania]], where although it was included in a list of 41 'problem' plants in the Serengeti-Mara ecosystem,<ref>Henderson, L., 2002, ‘Problem plants in Ngorongoro Conservation Area, Tanzania’, Unpublished report submitted to the NCA in November 2002, 15p</ref> it has been assessed to be naturalised in tourist areas, but not invasive (using roadside surveys)<ref>Witt, A.B.R., Kiambi, S., Beale, T. & Van Wilgen, B.W., 2017, ‘A preliminary assessment of the extent and potential impacts of alien plant invasions in the SerengetiMara ecosystem, East Africa’, Koedoe 59(1), a1426. https:// doi.org/10.4102/koedoe. v59i1.1426</ref>
* [[Ghana]], where it was noted to compete with and invade natural shrub and tree woodland vegetation in the [[Boabeng-Fiema Monkey Sanctuary]] and [[Kakum National Park]]<ref>{{Cite book |url=https://papaco.org/wp-content/uploads/2015/08/Invasive-plants-study.pdf |title=Invasive plants affecting protected areas of West Africa. Management for reduction of risk for biodiversity |publisher=IUCN, Gland, Switzerland and Ouagadougou, Burkina Faso |year=2013 |isbn=978-2-8317-1596-4}}</ref>


==Cultivation==
== Cultivation ==
Canna can be cultivated from sea level to 2,700 meters above [[sea level]], but thrives in temperate, tropical or subtropical mountain climates, between 1,000 and 2,000 meters above sea level; at an average temperature of 14 to 27&nbsp;°C and minimum annual rainfall of 500&nbsp;mm and up to 1,200&nbsp;mm. Canna prefers light sandy-loamy soils, but can also grow on heavy soils, as far as they are not wet. It is indifferent to the soil reaction (pH value). To make the seeds germinate, it is also necessary to let them soak in water for two to three days.<ref>Idárraga-Piedrahita, A., RDC Ortiz, R. Callejas Posada & M. Merello. (eds.) 2011. Fl. Antioquia: Cat. 2: 9-939. University of Antioquia, Medellín.</ref>
{{Howto-section|section|date=May 2022}}
''Canna indica'' (achira) has been cultivated by indigenous peoples of the Americas in tropical America for thousands of years. The place of the first domestication may have been the northern [[Andes]], as may be true of other similar root crops such as ''[[Calathea allouia]]'' and ''M. arundinacea''. The [[Cauca river]] valley of Colombia was a center of early domestication. Archaeological evidence has been found of the cultivation of achira in 3000&nbsp;BCE by people of the [[Las Vegas culture]] of coastal Ecuador. As the Las Vegas region is arid and semiarid, achira was not likely a native plant, but imported from more humid climates.<ref>Piperno, Dolores R. (Oct 2011), "The Origins of Plant Cultivation and Domestication in the New World Tropics", ''Current Anthropology'', Vol 52, No. S4, pp. S457-S458. Downloaded from JSTOR.</ref> Achira was also being cultivated by 2000&nbsp;BCE by the people of the [[Casma/Sechin culture]] in the extremely arid region of coastal [[Peru]], also an area in which achira was probably not native.<ref>Ugent et al, p. 417</ref>


===Field and climate requirements===
===Field and climate requirements===
To cultivate ''Canna indica'', the substrate should be rich, humiferous, and light.<ref name="aujardin1">{{cite web |url=https://www.aujardin.info/plantes/canna-brasiliensis.php |title=www.aujardin.info/plantes/canna-brasiliensis}}</ref> The optimal substrate consists of a deep, rich and well-drained soil in a sunny place with a pH between 5.5 - 7.5.<ref name="thefern">{{cite web |url=http://tropical.theferns.info/viewtropical.php?id=Canna+indica |title=www.tropical.theferns.info/viewtropical.php?id=Canna+indica}}</ref> The rhizomes should be planted at 10&nbsp;cm deep, after the last frost.<ref name="aujardin2">{{cite web |url=https://www.aujardin.info/plantes/canna.php |title=www.aujardin.info/plantes/canna}}</ref> Although it can tolerate dry periods, occasional irrigation will be beneficial for the yield. ''Canna indica'' is a plant that can withstand low temperatures (down to -10&nbsp;°C in regions with a mild climate). Nevertheless, the foliage can already be affected at 0&nbsp;°C.<ref name="aujardin2"/><ref name="thefern"/>
To cultivate ''Canna indica'', the substrate should be rich, humiferous, and light.<ref name="aujardin1">{{cite web |title=www.aujardin.info/plantes/canna-brasiliensis |url=https://www.aujardin.info/plantes/canna-brasiliensis.php}}</ref> The optimal substrate consists of a deep, rich and well-drained soil in a sunny place with a pH between 5.5–7.5.<ref name="thefern">{{cite web |title=www.tropical.theferns.info/viewtropical.php?id=Canna+indica |url=http://tropical.theferns.info/viewtropical.php?id=Canna+indica}}</ref> The rhizomes should be planted at 10&nbsp;cm deep, after the last frost.<ref name="aujardin2">{{cite web |title=www.aujardin.info/plantes/canna |url=https://www.aujardin.info/plantes/canna.php}}</ref> Although it can tolerate dry periods, occasional irrigation will be beneficial for the yield. ''C.&nbsp;indica'' is a plant that can withstand low temperatures (down to -10&nbsp;°C in regions with a mild climate). Nevertheless, the foliage can already be affected at 0&nbsp;°C.<ref name="aujardin2" /><ref name="thefern" />
''Canna indica'' can be found at elevations up to 2,000 meters above sea level in humid tropical climates. The plant can also be cultivated in subtropical and warm temperate zones. The best climate for growing ''Canna indica'' is found in areas where annual daytime temperatures are between 12&nbsp;°C and 32&nbsp;°C.<ref name="thefern"/> The plant prefers a mean annual rainfall between 1,000 - 4,500&nbsp;mm, but it can tolerate 500 - 5,000&nbsp;mm per year.<ref name="aujardin2"/>


===Propagation===
===Propagation===
''Canna indica'' is usually propagated by putting either the rhizome tips or the whole rhizomes in the ground.<ref name="NRC 1989">National Research Council. (1989). Lost crops of the Incas: little-known plants of the Andes with promise for worldwide cultivation. National Academies Press.</ref> Because the rhizomes are quickly perishable, storing them properly between the harvest and the next planting time is essential.<ref name="Gade 1966">Gade, D. W. (1966). Achira, the edible canna, its cultivation and use in the Peruvian Andes. Economic Botany, 20(4), 407-415.</ref> The large rhizomes can be divided in spring before the new shoots appear.<ref name="Cook" >{{cite journal |last1=Cook |first1=I. |title=The gardener's guide to growing canna. |date=2001}}</ref> Additionally, ''Canna indica'' can also be propagated by seeds. Seedlings growing early in spring are able to flower the same year they are sown.<ref name="aujardin1"/>
''Canna indica'' is usually propagated by putting either the rhizome tips or the whole rhizomes in the ground.<ref name="NRC 1989">National Research Council. (1989). Lost crops of the Incas: little-known plants of the Andes with promise for worldwide cultivation. National Academies Press.</ref> Because the rhizomes are quickly perishable, storing them properly between the harvest and the next planting time is essential.<ref name="Gade 1966">Gade, D. W. (1966). Achira, the edible canna, its cultivation and use in the Peruvian Andes. Economic Botany, 20(4), 407-415.</ref> The large rhizomes can be divided in spring before the new shoots appear.<ref name="Cook" /> Additionally, ''Canna indica'' can also be propagated by seeds. Seedlings growing early in spring are able to flower the same year they are sown.<ref name="aujardin1" />


===Sowing===
===Sowing===
The amount of rhizomes used for sowing is normally about 3000 – 4500&nbsp;kg/ha, and the planting density should not exceed 22,500 plants/ha. When putting the rhizomes in the ground, the sprouts should point upwards. The ideal spacing between plants in a row is 60 – 70&nbsp;cm, and the spacing between rows is 70 – 80&nbsp;cm. Because ''Canna indica'' grows quite tall, it should be cultivated at locations with relatively low wind speed to prevent bending over. [[Germination]] begins when the soil temperature is above 16&nbsp;°C, while the optimal temperature is 20 - 25&nbsp;°C. 20 – 30 days after sowing, seedlings emerge.<ref name=":0">{{cite journal |last1=Xiyou |first1=Zhang |title=芭蕉芋高产栽培技术 |journal=Xiandai Nongye Keji |date=2011 |doi=10.3969/j.issn.1007-5739.2011.10.074}}</ref>
The amount of rhizomes used for sowing is normally about 3,000–4,500&nbsp;kg/ha, and the planting density should not exceed 22,500 plants/ha. When putting the rhizomes in the ground, the sprouts should point upwards. The ideal spacing between plants in a row is 60–70&nbsp;cm, and the spacing between rows is 70–80&nbsp;cm. Because ''Canna indica'' grows quite tall, it should be cultivated at locations with relatively low wind speed to prevent bending over. [[Germination]] begins when the soil temperature is above 16&nbsp;°C, while the optimal temperature is 20–25&nbsp;°C. 20–30 days after sowing, seedlings emerge.<ref name=":0" />


===Fertilization===
===Fertilization===
''Canna indica'' is reliant on fertilizer to achieve a good yield. In the early stages, seedling fertilizer should be applied during the first tillage and spread according to seedling conditions. Up to 750&nbsp;kg/ha of ternary compound fertilizer (N, P, K) can be applied. When applying fertilizer, direct contact with the base and leaves should be avoided. Before flowering, the second tillage can be combined with the second fertilizer application to promote the growth of underground stems and roots. Applying fertilizer evenly on both sides of the roots helps them to absorb water and grow uniformly.<ref name="fertilization">{{cite journal|last1=Lan|first1=Changxian|date=2020|title=芭蕉芋高产高效栽培技术|journal=乡村科技}} [in Mandarin]</ref>
''Canna indica'' is reliant on fertilizer to achieve a good yield. In the early stages, seedling fertilizer should be applied during the first tillage and spread according to seedling conditions. Up to 750&nbsp;kg/ha of ternary compound fertilizer (N, P, K) can be applied. When applying fertilizer, direct contact with the base and leaves should be avoided. Before flowering, the second tillage can be combined with the second fertilizer application to promote the growth of underground stems and roots. Applying fertilizer evenly on both sides of the roots helps them to absorb water and grow uniformly.<ref name="fertilization">{{cite journal |last1=Lan |first1=Changxian |date=2020 |title=芭蕉芋高产高效栽培技术 |journal=乡村科技}} [in Mandarin]</ref>


===Weed control===
===Weed control===
Fast growing weeds can have a negative impact on ''Canna indica'', especially before the 4th leaf appears. Two [[weed control]] methods are usually practiced: Firstly, applying [[herbicides]] to eradicate weeds and secondly, carrying out mechanical operations depending on the weed growth.<ref name="fertilization" />
Fast growing weeds can have a negative impact on ''C.&nbsp;indica'', especially before the fourth leaf appears. Two [[weed control]] methods are usually practiced: firstly, applying [[herbicides]] to eradicate weeds and secondly, carrying out mechanical operations depending on the weed growth.<ref name="fertilization" />


===Harvest===
===Harvest===
About six months after planting, the crop can be harvested. At this time, the rhizomes are tender and succulent. However, the rhizomes are mainly harvested later, after 8 – 10 months, when they reach their maximum size. ''Canna indica'' is suitable as an emergency crop in case of shortfalls due to its long durability in the ground. It can be harvested during times when the cultivation of other crops is not successful.<ref name="NRC 1989" />
About six months after planting, the crop can be harvested. At this time, the rhizomes are tender and succulent. However, the rhizomes are mainly harvested later, after 8–10 months, when they reach their maximum size. ''C.&nbsp;indica'' is suitable as an emergency crop in case of shortfalls due to its long durability in the ground. It can be harvested during times when the cultivation of other crops is not successful.<ref name="NRC 1989" />


Harvesting is done manually by pulling out the crop with a [[shovel]] or another digging tool, shaking off the soil, and then cutting the stems to separate the rhizomes.<ref name="Gade 1966" /><ref name="Caicedo 2003" />
Harvesting is done manually by pulling out the crop with a [[shovel]] or another digging tool, shaking off the soil, and then cutting the stems to separate the rhizomes.<ref name="Gade 1966" /><ref name="Caicedo 2003">Caicedo Díaz, G. E., Rozo Wilches, L. S., & Rengifo Benítez, G. (2003). La achira: alternativa agroindustrial para áreas de economía campesina. [in Spanish]</ref>


===Yield===
===Yield===
The yield varies depending on the region of cultivation and its climate and soil conditions.<ref name="NRC 1989" /><ref name="Kay 1973">Kay, D. E. (1973). Root crops (No. 2). London: Tropical Products Institute.</ref> In certain locations, the yield of ''Canna indica'' can be higher than other starchy crops like [[cassava]] and [[arrowroot]].<ref name="NRC 1989" /> The average [[rhizome]] yield is believed to be around 22 - 50 tons per hectare, whereas the [[starch]] yield is about 2 - 5 tons per hectare and can reach up to 10 tons per hectare.<ref name="NRC 1989" /> Observations show that the highest yield in rhizomes does not necessarily correspond to the highest yield in starch.<ref name="Caicedo 2003">Caicedo Díaz, G. E., Rozo Wilches, L. S., & Rengifo Benítez, G. (2003). La achira: alternativa agroindustrial para áreas de economía campesina. [in Spanish]</ref>
The yield varies depending on the region of cultivation and its climate and soil conditions.<ref name="NRC 1989" /><ref name="Kay 1973">Kay, D. E. (1973). Root crops (No. 2). London: Tropical Products Institute.</ref> In certain locations, the yield of ''Canna indica'' can be higher than other starchy crops like [[cassava]] and [[arrowroot]].<ref name="NRC 1989" /> The average [[rhizome]] yield is believed to be around 22–50 tons per hectare, whereas the [[starch]] yield is about 2–5 tons per hectare and can reach up to 10 tons per ha.<ref name="NRC 1989" /> Observations show that the highest yield in rhizomes does not necessarily correspond to the highest yield in starch.<ref name="Caicedo 2003" />


===Diseases===
==Traditional starch production==
Cannas suffer from relatively few diseases compared to other species. Nevertheless, some diseases have been recorded to affect ''Canna indica''. One of them is Canna rust (''[[Puccinia thaliae]]''), a fungus that causes orange spots on the leaves. In addition, plant viruses occur: [[Hippeastrum mosaic virus]], [[Tomato aspermy virus]], [[Canna yellow mottle virus]] and [[Canna yellow streak virus]] which can cause mild or strong symptoms from streaked leaves, stunted growth to distorted blooms. Furthermore, there is [[Botrytis (fungus)]], a mold that affects the flowers.<ref name="Reddy P. P.">{{cite journal |last1=Reddy |first1=P. P. |title=Reddy P.P. (2015) Achira, Canna edulis. In: Plant Protection in Tropical Root and Tuber Crops. Springer, New Delhi. |publisher=Springer |doi=10.1007/978-81-322-2389-4_9}}</ref>
Rhizomes for starch extraction should be processed within days after the harvest due to their perishability.<ref name="Kay 1973" /><ref name="Garcia 1998">García, H., Arias, R., & Camacho, J. (1998). Almidón de achira: Producción y uso industrial. CORPOICA, Programa Nacional de Maquinaria Agrícola y Postcosecha, Tibaitatá. [in Spanish]</ref> The following steps of traditional starch production in [[Colombia]] show that the process is dependent on a significant supply of fresh water.<ref name="NRC 1989" /><ref name="Garcia 1998" />


Many different Canna varieties exist, and some of them are resistant to a certain type of disease. To prevent mold, the soil should be well-drained without too much soil moisture or stagnating water.<ref name="Reddy P. P." /> To diminish the risk of spreading diseases, dead and infected leaves should be removed.<ref name=":0" />
In rural areas in Colombia, the recently harvested rhizomes are packed up in sacks and transported to the processing site. The first step is cleaning the rhizomes by washing them in tanks. The second step is grating the rhizomes mechanically to disrupt the cell walls to release the starch. The third step is sieving to separate the starch from the rest of the rhizome pulp: The grated rhizomes and additional water are passed manually or mechanically through a sieve. The fourth step is separating the starch from the sieving water by letting the starch granules sink to the bottom of a tank. The fifth step is washing the starch multiple times with clean water. The last step is drying the starch by exposing it to the sun. The starch is now ready to be stored or transported.<ref name="Caicedo 2003" /><ref name="Garcia 1998" />


===Pests===
==Uses==
The Canna leaf roller moth (''[[Calpodes ethlius]]'') has been seen on Canna plants in the [[US]].<ref name="Cook"/> It is a [[caterpillar]] known as the worst pest for this plant and primarily found in the Southern United States. This pest causes damages by laying its eggs in the bud of developing stalks. To protect the eggs from predators and insecticide, caterpillars use sticky webs to keep the leaves from unfurling. The pupate then feed on the leaves which can lead to losses of yield due to reduced photosynthesis.<ref name="Reddy P. P." />
''Canna indica'' sps. can be used for the treatment of industrial waste waters through constructed wetlands. It is effective for the removal of high organic load, colour and chlorinated organic compounds from paper mill wastewater.<ref>Choudhary et al. (2011) Performance of constructed wetland for the treatment of pulp and paper mill wastewater, Proceedings of World Environmental and Water Resources Congress 2011: Bearing Knowledge for Sustainability, Palm Springs, California, USA, p-4856-4865, 22–26 May.</ref>


The Japanese Beetle (''[[Popillia japonica]]'') is another leaf ragging pest with mainly small consequences for Canna plants. This beetle feeds on the part of the leaves between the veins. In its originating region in Japan, it does not cause a lot of damages. However, in the US it has no natural predator and can cause serious damages on Cannas and other plants.<ref name="Reddy P. P." />
The seeds are widely used for jewellery. The seeds are also used as the mobile elements of the [[kayamb]], a [[musical instrument]] from [[Réunion]], as well as the [[hosho (instrument)|hosho]], a [[gourd]] [[rattle (percussion instrument)|rattle]] from [[Zimbabwe]], where the seeds are known as ''"hota"'' seeds.<ref>Maas-van de Kamer, H. & PJM Maas. 2003. Cannaceae. In: Manual of Plants of Costa Rica, BE Hammel, MH Grayum, C. Herrera & N. Zamora (eds.). Monogr. Syst. Bot. Missouri Bot. Gard. 92: 384-385.</ref>


The Bird Cherry Oat Aphid (''[[Rhopalosiphum padi]]'') has been recorded to affect stored rhizomes. Although this pest has not been causing severe damages yet, it can particularly affect plants grown in greenhouses and can be combatted with parasitical wasps. It is a more common pest on [[cereals]].<ref name="Reddy P. P." />
===As food===
The starch is easily digestible and therefore well suited as a health and baby food. The tubers can be eaten raw or cooked. The starch is also suitable for baking. In South America, the leaves are used to wrap [[pastries]] ([[tamales]], humitas, quimbolitos, juanes, etc.), similar to banana leaves or [[maize]] leaves. In some areas, the leaves are fed to [[livestock]]. The round seeds are pierced in some areas and used as pearls. They are also used as a filling of rattles. From the Indians, the seeds were previously used as gold weights, similar to the seeds of [[carob]] (''Ceratonia siliqua''), as they have a constant weight.<ref>PF Yeo: Secondary pollen presentation: Form, function and evolution. In: Pl. Syst. Evol., Suppl. 6, 1993, pp. 204–208.</ref>


==Traditional starch production==
The large rhizomes are edible.<ref name=":1">FAO, "''[http://ecocrop.fao.org/ecocrop/srv/en/cropView?id=2228 Canna edulis] {{Webarchive|url=https://web.archive.org/web/20161005090156/http://ecocrop.fao.org/ecocrop/srv/en/cropView?id=2228 |date=2016-10-05 }}''", accessed 23 Feb 2016.</ref> They can be eaten raw, but are usually baked. Cooked, the rhizomes become translucent, mucilaginous, and sweet. Starch is produced by grinding or pounding the roots and soaking them in water, separating the starch granules from fibers in the roots.  The starch granules of ''C.&nbsp;indica'' are also translucent and the largest known from any plant.  The starch is occasionally marketed commercially as "arrowroot", a name also applied to the starch of other similar roots crops such as ''[[Maranta arundinacea]]''.<ref>''Lost Crops of the Incas: Little-known Plants of the Andes with Promise for Worldwide Cultivation'', National Academies Press, Nation Research Council, p. 27, [http://www.nap.edu/catalog/1398.html], accessed 22 Feb 2016.</ref> It was an ingredient in mid-nineteenth century recipes such as cakes<ref>{{Cite book|title=Beeton's Book of Household Management|last=Beeton|first=Isabella|publisher=S. O. Beeton|year=1859–61|isbn=1-870962-15-X|location=England|pages=863, 864}}</ref> and was called '''tous-les-mois'''.<ref>{{Cite web|url=http://www.dictionary.com/browse/tous-les-mois|title=Dictionary.com|access-date=2016-07-07}}</ref>
Rhizomes for starch extraction should be processed within days after the harvest due to their perishability.<ref name="Kay 1973"/><ref name="Garcia 1998">García, H., Arias, R., & Camacho, J. (1998). Almidón de achira: Producción y uso industrial. CORPOICA, Programa Nacional de Maquinaria Agrícola y Postcosecha, Tibaitatá. [in Spanish]</ref> The following steps of traditional [[starch]] production in [[Colombia]] show that the process is dependent on a significant supply of fresh water.<ref name="NRC 1989"/><ref name="Garcia 1998" />


In rural areas in Colombia, the recently harvested rhizomes are packed up in sacks and transported to the processing site. The first step is cleaning the rhizomes by washing them in tanks. The second step is grating the rhizomes mechanically to disrupt the cell walls to release the starch. The third step is sieving to separate the starch from the rest of the rhizome pulp: The grated rhizomes and additional water are passed manually or mechanically through a sieve. The fourth step is separating the starch from the sieving water by letting the starch granules sink to the bottom of a tank. The fifth step is washing the starch multiple times with clean water. The last step is drying the starch by exposing it to the sun. The starch is now ready to be stored or transported.<ref name="Caicedo 2003"/><ref name="Garcia 1998" />
The [[Spanish people|Spanish]] took notice of achira in 1549 when it was mentioned as one of four root crops being grown for food by the people of the Chuquimayo valley ([[Jaén Province, Peru|Jaén province]]) of Peru. The other three were sweet potato (''[[Ipomoea batatas]]''), cassava (''[[Manihot esculenta]]''), and racacha (''[[Arracacia xanthorrhiza]]''). In 1609, achira was described by a Spanish visitor to [[Cusco|Cusco, Peru]].<ref>Ugent, Donald, Pozorski, Shelia, and Pozorski, Thomas (Oct-Dec 1984), "New Evidence for Ancient Cultivation of Canna edulis in Peru", ''Economic Botany'', Vol 38, No. 4, p. 418</ref>  In modern times, achira is rarely grown for food, although in the 1960s it was still an important crop in [[Paruro Province]] on the upper [[Apurimac River]] near Cusco.  There, at elevations of up to {{convert|2600|m|ft}}, achira is cultivated and harvested, especially to be eaten during the [[Corpus Christi (feast)|Festival of Corpus Christi]] in May or June. The achira rhizomes are wrapped with achira leaves and placed in a pit with heated rocks. The pit is then filled with dirt and the achira is slowly baked underground.<ref>Gade, Daniel W. (1966), "Achira, the Edible Canna, Its Cultivation and Use in the Peruvian Andes", ''Economic Botany'', Vol 20, No. 4, pp. 409–413</ref>


==Range==
In the 1950s, ''Canna indica'' was introduced to [[China]] as a perennial ornamental crop. It was mainly planted in parks and home gardens in [[Guizhou]] for ornamental purposes. From the late 1950s to the early 1960s, China suffered from a severe food shortage, known as the [[Great Chinese Famine]]. During this time, weeds, tree roots, tubers, etc., became an important food source. ''Canna indica'' was also part of this [[famine food]]. As a consequence, the plant became known as a food crop. Today, the rhizomes are processed to starch, [[vermicelli]], [[white wine]], and [[ethanol]]. Due to the use as a food crop and relatively low diseases and pests pressure, ''Canna indica'' has become a characteristic crop for large-scale cultivation in China. The research in China mainly focuses on processing methods, and additionally, there are few studies on varieties and cultivation techniques.<ref name="Food">{{cite journal |last1=Zhengbang |first1=Zhou |title=Development Situation and Potentiality of Canna edulis in Guizhou |journal=Guizhou Agricultural Sciences |date=2009}}</ref>
Canna indica is native to South America: Colombia, Venezuela, Ecuador, Peru, Brazil, Uruguay and Argentina as well as the West Indies and Central America.<ref>illeen, TJ & TS Schulenberg. 1998. A biological assessment of Noel Kempff Mercado National Park, Bolivia. RAP Working Papers 10: 1–372.</ref>


In modern times, ''C. indica'' is reportedly naturalized in Austria, Portugal, Spain, [[Azores]], [[Canary Islands]], [[Cape Verde]], [[Madeira]], most of tropical Africa, [[Ascension Island]], [[St. Helena]], Madagascar, China, Japan, Taiwan, the [[Bonin Islands]], India, Nepal, Sri Lanka, Cambodia, Laos, Thailand, Vietnam, Burma, [[Java]], Malaysia, the Philippines, [[Christmas Island]], the [[Bismarck Archipelago]], [[Norfolk Island]], [[New South Wales]], [[Queensland]], Fiji, Tonga, Vanuatu, Kiribati, the [[Cook Islands]], the [[Society Islands]], the [[Caroline Islands]] and [[Hawaii]].<ref>{{WCSP | 223906 | accessdate = 30 March 2018}}</ref>
The Achira rhizomes consist of 73% water. In addition to 24% starch, they still contain 1% protein, 0.6% crude fiber and 1.4% minerals.<ref>Vernon Hilton Heywood: ''Flowering Plants of the World'' , Basel-Boston-Stuttgart 1978.</ref>


C. Indica has been included in the [[Global Invasive Species Database]]<ref>{{Cite web|title=Canna Indica Factsheet|url=https://www.cabi.org/isc/datasheet/14575#tosummaryOfInvasiveness|url-status=live|access-date=6 March 2021|website=CABI Invasive Species Compendium}}</ref> and has been declared as invasive in the following places:
===As biodegradable plastics===
 
In [[China]], ''Canna indica'' starch and [[polyethylene]] are used as raw materials to produce [[biodegradable plastics]]. This type of plastics is affordable and can degrade completely into fertilizer for crop production in just a few months. The method for producing ''C.&nbsp;indica'' plastics consists of fusing 60–80% of ''C.&nbsp;indica'' starch and 20–40% of polyethylene uniformly at 240&nbsp;°C.<ref>{{Cite patent|country=CN|number=CN101798401B|title=芭蕉芋塑料及其生产方法|status=|pubdate=|gdate=2012|invent1=Chen|inventor1-first=Jun|url=http://www.zhangqiaokeyan.com/patent-detail/06120920003.html}} [in Mandarin]</ref>
* [[South Africa]] where it is categorised as a category 1b Invader in terms of the National Environmental Management: Biodiversity Act (10/2004) list of Alien and Invasive Species<ref>{{Cite web|title=National Environmental Management: Biodiversity Act: Alien and Invasive Species Lists {{!}} South African Government|url=https://www.gov.za/documents/national-environmental-management-biodiversity-act-alien-and-invasive-species-lists-18-sep|access-date=2021-03-06|website=www.gov.za}}</ref> which prohibits their cultivation, propagation, translocation and trade, and requires them to be removed and destroyed when found. This is because it competes with and replaces indigenous species, often in waterways and marshy areas.<ref>{{Cite web|last=Janey|title=Invasive Species South Africa - Protecting Biodiversity from Invasion - Indian shot {{!}} Canna indica|url=http://www.invasives.org.za/legislation/item/211-indian-shot-canna-indica|access-date=2021-03-06|website=www.invasives.org.za|language=en-gb}}</ref> 
* Australia, regarded as a weed in [[New South Wales]] and South Eastern [[Queensland]]<ref>{{Cite web|title=NSW WeedWise|url=https://weeds.dpi.nsw.gov.au/Weeds/CannaLily|access-date=2021-03-06|website=weeds.dpi.nsw.gov.au}}</ref>
* Pacific Islands, where it has been included in the list of plant threats to Pacific ecosystems<ref>{{Cite web|title=Canna indica: info from PIER (PIER species info)|url=http://www.hear.org/pier/species/canna_indica.htm|access-date=2021-03-06|website=www.hear.org}}</ref> as a high risk species
* [[Tanzania]], where although it was included in a list of 41 'problem' plants in the Serengeti-Mara ecosystem,<ref>Henderson, L., 2002, ‘Problem plants in Ngorongoro Conservation Area, Tanzania’, Unpublished report submitted to the NCA in November 2002, 15p</ref> it has been assessed to be naturalised in tourist areas, but not invasive (using roadside surveys)<ref>Witt, A.B.R., Kiambi, S., Beale, T. & Van Wilgen, B.W., 2017, ‘A preliminary assessment of the extent and potential impacts of alien plant invasions in the SerengetiMara ecosystem, East Africa’, Koedoe 59(1), a1426. https:// doi.org/10.4102/koedoe. v59i1.1426</ref>
* [[Ghana]], where it was noted to compete with and invade natural shrub and tree woodland vegetation in the [[Boabeng-Fiema Monkey Sanctuary]] and [[Kakum National Park]]<ref>{{Cite book|url=https://papaco.org/wp-content/uploads/2015/08/Invasive-plants-study.pdf|title=Invasive plants affecting protected areas of West Africa. Management for reduction of risk for biodiversity|publisher=IUCN, Gland, Switzerland and Ouagadougou, Burkina Faso|year=2013|isbn=978-2-8317-1596-4}}</ref>


==See also==
==See also==

Latest revision as of 03:40, 26 May 2022


Not to be confused with Cannabis indica.
"Kardal" redirects here. It is not to be confused with Cardal (disambiguation), Kårdal, Kard'al, or Kardala.

Canna indica
Canna edulis, Glasgow Botanic Gardens.jpg
Canna edulis, full plant in bloom
Scientific classification edit
: [[Template:Taxonomy/Canna]]
Species:
Template:Taxonomy/CannaC. indica
Binomial name
Template:Taxonomy/CannaCanna indica
Synonyms

Canna indica, commonly known as Indian shot,[1] African arrowroot, edible canna, purple arrowroot, Sierra Leone arrowroot,[2] is a plant species in the family Cannaceae. It is native to much of South America, Central America, the West Indies, and Mexico. It is also naturalized in the southeastern United States (Florida, Texas, Louisiana, and South Carolina), and much of Europe, sub-Saharan Africa, Southeast Asia, and Oceania.[2] Canna indica (achira in Hispanic America,[2] cana-da-índia in Brazil) has been a minor food crop cultivated by indigenous peoples of the Americas for thousands of years.[3][4]

Description[edit]

Canna indica is a perennial growing to between 0.5 and 2.5 metres (1+1⁄2 and 8 feet), depending on the variety. It is hardy to zone 10 and is frost tender. The flowers are hermaphrodite.[5][6][7][8]

It forms branched rhizomes 60 centimetres (24 inches) long[9] that are divided into bulbous segments and covered in two lines by pale green or purple flaky leaves. The very large grains of starch stored there can supposedly be seen with the naked eye. The plants form an upright, unbranched stem or the overlapping leaf sheaths form a pseudo trunk.[10]

The alternate and spiral or two-line arranged, very large, simple leaves are divided into leaf sheaths, short petioles and leaf blades. The leaf blade has a length of 30 to 60 cm (12 to 24 in) and a width of 10 to 20 cm (4 to 8 in). The parallel leaf veins arise from the midrib (not typical of monocots). The leaves are broad, green or violet green, with petiolesshort and elliptical sheets, which can measure 30 to 60 cm long and 10 to 25 cm wide, with the base obtuse or narrowly cuneate and the apex is shortly acuminate or sharp. The surface of the rhizome is carved by transverse grooves, which mark the base of scales that cover it; from the lower part white and apex rootlets emerge, where there are numerous buds, the leaves sprout, the floral stem and the stems.[11]

The hermaphrodite, mostly large flowers are zygomorphic and threefold. On pedicels, they are 0.2–1 cm (1⁄8–3⁄8 in) long, red or yellow-orange, except in some cultivars, 4.5–7.5 cm (2–3 in) long, with the sepals being closely triangular, 1–1.7 cm (1⁄2–3⁄4 in) long and the petals erect, 4–6.5 cm long. The tube is 1.5–2 cm long. The bracts are designed differently. The three free sepals are usually green. The three petals are green or have depending on the variety shades of yellow about orange and red to pink. The base of the petals is fused with the staminodien to a stamen column. There are two circles, each with originally three stamens present. The petals and staminodes are usually yellow to red. The three carpels are at a constant under (syncarp) ovary adherent which has a soft-spiky surface and many central angle constant ovules contains. The pollen is deposited on the abaxial (off-axis) surface of the stylus.

The pollination mechanism is very specialised and the pollination is done by insects. The insects pick up the pollen from the flattened style. In their homeland, the bloom by humming pollinated. There they bloom in the months of August to October. The fruits are ellipsoid capsules to globose, warty, 1.5 to 3 cm long, chestnut coloured, with a large amount of black and very hard seeds.[12]

The seeds are small, globular, black pellets, hard and dense enough to sink in water.[7] They resemble shotgun pellets giving rise to the plant's common name of Indian shot.[1][13] The seeds are hard enough to shoot through wood and still survive and later germinate. According to the BBC, "The story goes that during the Indian Mutiny of the 19th century, soldiers used the seeds of a Canna indica when they ran out of bullets."[13]

  • Illustration by M. Hart

    Illustration by M. Hart

  • Leaves

    Leaves

  • Flowers and capsules

    Flowers and capsules

  • Seeds

    Seeds

Taxonomy[edit]

Canna edulis fruit
Flower of C. indica var. flava
C. indica, commonly known as Indian shot, Tagore Park Mahe District, Puducherry UT, India

In the last three decades of the 20th century, Canna species have been categorised by two different taxonomists, Paulus Johannes Maria Maas from the Netherlands and Nobuyuki Tanaka from Japan. Maas regards C. coccinea, C. compacta, C. discolor, C. patens and C. speciosa as synonyms or varieties of C. indica, while Tanaka recognises several additional varieties of C. indica.

  • Canna indica var. indica L.
A medium sized species; green foliage, oblong shaped, spreading habit; triangular flower stems, coloured green; spikes of flowers are erect, self-coloured red, staminodes are long and narrow, edges regular, petals red, partial self-cleaning; fertile both ways, self-pollinating and also true to type, capsules globose; rhizomes are thick, up to 3 cm in diameter, coloured purple; tillering is prolific. Introduced by Linnaeus.[7][14]
  • Canna indica var. flava (Roscoe ex Baker) Nb. Tanaka
Yellow bloom. Many plants previously offered as C. lutea fall into this subspecies.[14]
  • Canna indica var. maculata (Hook) Nb. Tanaka
A medium sized species; green foliage, ovoid shaped, branching habit; spikes of flowers are erect, yellow with red spots, staminodes are long and narrow, edges regular, petals green, fully self-cleaning, low bloomer; fertile both ways, self-pollinating and also true to type, capsules globose; rhizomes are thick, up to 3 cm in diameter, coloured white and pink; tillering is average. Introduced by Hook.. Many plants previously offered as C. lutea fall into this subspecies.[14]
  • Canna indica var. sanctae rosea (Kraenzl) Nb. Tanaka
A small species; green foliage, oval shaped, white margin, branching habit; spikes of flowers are erect, self-coloured pink, staminodes are long and narrow, edges regular, labellum is pink, stamen is pink, style is pink, petals red with farina, fully self-cleaning; fertile both ways, self-pollinating and also true to type, capsules ellipsoid; rhizomes are thick, up to 3 cm in diameter, coloured white and pink; tillering is prolific.[14]
  • Canna indica var. warszewiczii (A.Dietr.) Nb.Tanaka
This variety is distinguishable from C. indica var. indica by having purple-red-margined leaves, purple-red fruits and slightly corm-like thickened terrestrial stem at the base. Additionally to this, there are normally two staminodes, recurved backwards, and the stamen is often strongly reflexed at the apex. These characteristics are fairly stable in this taxon. Sometimes, this variety is confused with C. discolor Lindl., from which it differs in much smaller, deep-red coloured flowers, short and slender rhizomes and chromosome numbers (2n=27 in C. discolor and 2n=18 in C. indica var. warszewiczii)[14]

Distribution and habitat[edit]

Canna indica is native to South America: Colombia, Venezuela, Ecuador, Peru, Brazil, Uruguay and Argentina as well as the West Indies and Central America.[15]

In modern times, C. indica is reportedly naturalized in Austria, Portugal, Spain, Azores, Canary Islands, Cape Verde, Madeira, most of tropical Africa, Ascension Island, St. Helena, Madagascar, China, Japan, Taiwan, the Bonin Islands, India, Nepal, Sri Lanka, Cambodia, Laos, Thailand, Vietnam, Burma, Java, Malaysia, the Philippines, Christmas Island, the Bismarck Archipelago, Norfolk Island, New South Wales, Queensland, Fiji, Tonga, Vanuatu, Kiribati, the Cook Islands, the Society Islands, the Caroline Islands and Hawaii.[16]

Canna can be cultivated from sea level to 2,700 m (8,900 ft) above sea level, but thrives in temperate, tropical or subtropical mountain climates, between 1,000 and 2,000 m (3,300 and 6,600 ft) above sea level (in humid tropical climates for higher elevations) at a mean temperature of 14 to 27 °C.[17] The plant prefers a mean annual rainfall between 1,000–4,500 millimetres (3+1⁄2–15 ft), but it can tolerate 500–5,000 mm per year.[18] Canna prefers light sandy-loamy soils, but can also grow on heavy soils, as far as they are not wet. It is indifferent to soil pH. For seeds to germinate, they must soak in water for two to three days.[19]

Ecology[edit]

Diseases[edit]

Cannas suffer from relatively few diseases compared to other species. Nevertheless, some diseases have been recorded to affect C. indica. One of them is Canna rust (Puccinia thaliae), a fungus that causes orange spots on the leaves. In addition, plant viruses occur: Hippeastrum mosaic virus, Tomato aspermy virus, Canna yellow mottle virus and Canna yellow streak virus which can cause mild or strong symptoms from streaked leaves, stunted growth to distorted blooms. Furthermore, there is Botrytis (fungus), a mold that affects the flowers.[20]

Many different Canna varieties exist, and some of them are resistant to a certain type of disease. To prevent mold, the soil should be well-drained without too much soil moisture or stagnating water.[20] To diminish the risk of spreading diseases, dead and infected leaves should be removed.[21]

Pests[edit]

The canna leaf roller moth (Calpodes ethlius) has been seen on Canna plants in the US.[22] It is a caterpillar known as the worst pest for this plant and primarily found in the Southern United States. This pest causes damages by laying its eggs in the bud of developing stalks. To protect the eggs from predators and insecticide, caterpillars use sticky webs to keep the leaves from unfurling. The pupate then feed on the leaves which can lead to losses of yield due to reduced photosynthesis.[20]

The Japanese beetle (Popillia japonica) is another leaf ragging pest with mainly small consequences for Canna plants. This beetle feeds on the part of the leaves between the veins. In its originating region in Japan, it does not cause a lot of damages. However, in the US it has no natural predator and can cause serious damages on Cannas and other plants.[20]

The bird cherry-oat aphid (Rhopalosiphum padi) has been recorded to affect stored rhizomes. Although this pest has not been causing severe damages yet, it can particularly affect plants grown in greenhouses and can be combatted with parasitical wasps. It is a more common pest on cereals.[20]

As an invasive species[edit]

C. indica has been included in the Global Invasive Species Database[23] and has been declared as invasive in the following places:

  • South Africa where it is categorised as a category 1b Invader in terms of the National Environmental Management: Biodiversity Act (10/2004) list of Alien and Invasive Species[24] which prohibits their cultivation, propagation, translocation and trade, and requires them to be removed and destroyed when found. This is because it competes with and replaces indigenous species, often in waterways and marshy areas.[25]
  • Australia, regarded as a weed in New South Wales and South Eastern Queensland[26]
  • Pacific Islands, where it has been included in the list of plant threats to Pacific ecosystems[27] as a high-risk species
  • Tanzania, where although it was included in a list of 41 'problem' plants in the Serengeti-Mara ecosystem,[28] it has been assessed to be naturalised in tourist areas, but not invasive (using roadside surveys)[29]
  • Ghana, where it was noted to compete with and invade natural shrub and tree woodland vegetation in the Boabeng-Fiema Monkey Sanctuary and Kakum National Park[30]

Cultivation[edit]

Template:Howto-section Canna indica (achira) has been cultivated by indigenous peoples of the Americas in tropical America for thousands of years. The place of the first domestication may have been the northern Andes, as may be true of other similar root crops such as Calathea allouia and M. arundinacea. The Cauca river valley of Colombia was a center of early domestication. Archaeological evidence has been found of the cultivation of achira in 3000 BCE by people of the Las Vegas culture of coastal Ecuador. As the Las Vegas region is arid and semiarid, achira was not likely a native plant, but imported from more humid climates.[31] Achira was also being cultivated by 2000 BCE by the people of the Casma/Sechin culture in the extremely arid region of coastal Peru, also an area in which achira was probably not native.[32]

Field and climate requirements[edit]

To cultivate Canna indica, the substrate should be rich, humiferous, and light.[33] The optimal substrate consists of a deep, rich and well-drained soil in a sunny place with a pH between 5.5–7.5.[17] The rhizomes should be planted at 10 cm deep, after the last frost.[18] Although it can tolerate dry periods, occasional irrigation will be beneficial for the yield. C. indica is a plant that can withstand low temperatures (down to -10 °C in regions with a mild climate). Nevertheless, the foliage can already be affected at 0 °C.[18][17]

Propagation[edit]

Canna indica is usually propagated by putting either the rhizome tips or the whole rhizomes in the ground.[34] Because the rhizomes are quickly perishable, storing them properly between the harvest and the next planting time is essential.[35] The large rhizomes can be divided in spring before the new shoots appear.[22] Additionally, Canna indica can also be propagated by seeds. Seedlings growing early in spring are able to flower the same year they are sown.[33]

Sowing[edit]

The amount of rhizomes used for sowing is normally about 3,000–4,500 kg/ha, and the planting density should not exceed 22,500 plants/ha. When putting the rhizomes in the ground, the sprouts should point upwards. The ideal spacing between plants in a row is 60–70 cm, and the spacing between rows is 70–80 cm. Because Canna indica grows quite tall, it should be cultivated at locations with relatively low wind speed to prevent bending over. Germination begins when the soil temperature is above 16 °C, while the optimal temperature is 20–25 °C. 20–30 days after sowing, seedlings emerge.[21]

Fertilization[edit]

Canna indica is reliant on fertilizer to achieve a good yield. In the early stages, seedling fertilizer should be applied during the first tillage and spread according to seedling conditions. Up to 750 kg/ha of ternary compound fertilizer (N, P, K) can be applied. When applying fertilizer, direct contact with the base and leaves should be avoided. Before flowering, the second tillage can be combined with the second fertilizer application to promote the growth of underground stems and roots. Applying fertilizer evenly on both sides of the roots helps them to absorb water and grow uniformly.[36]

Weed control[edit]

Fast growing weeds can have a negative impact on C. indica, especially before the fourth leaf appears. Two weed control methods are usually practiced: firstly, applying herbicides to eradicate weeds and secondly, carrying out mechanical operations depending on the weed growth.[36]

Harvest[edit]

About six months after planting, the crop can be harvested. At this time, the rhizomes are tender and succulent. However, the rhizomes are mainly harvested later, after 8–10 months, when they reach their maximum size. C. indica is suitable as an emergency crop in case of shortfalls due to its long durability in the ground. It can be harvested during times when the cultivation of other crops is not successful.[34]

Harvesting is done manually by pulling out the crop with a shovel or another digging tool, shaking off the soil, and then cutting the stems to separate the rhizomes.[35][37]

Yield[edit]

The yield varies depending on the region of cultivation and its climate and soil conditions.[34][38] In certain locations, the yield of Canna indica can be higher than other starchy crops like cassava and arrowroot.[34] The average rhizome yield is believed to be around 22–50 tons per hectare, whereas the starch yield is about 2–5 tons per hectare and can reach up to 10 tons per ha.[34] Observations show that the highest yield in rhizomes does not necessarily correspond to the highest yield in starch.[37]

Traditional starch production[edit]

Rhizomes for starch extraction should be processed within days after the harvest due to their perishability.[38][39] The following steps of traditional starch production in Colombia show that the process is dependent on a significant supply of fresh water.[34][39]

In rural areas in Colombia, the recently harvested rhizomes are packed up in sacks and transported to the processing site. The first step is cleaning the rhizomes by washing them in tanks. The second step is grating the rhizomes mechanically to disrupt the cell walls to release the starch. The third step is sieving to separate the starch from the rest of the rhizome pulp: The grated rhizomes and additional water are passed manually or mechanically through a sieve. The fourth step is separating the starch from the sieving water by letting the starch granules sink to the bottom of a tank. The fifth step is washing the starch multiple times with clean water. The last step is drying the starch by exposing it to the sun. The starch is now ready to be stored or transported.[37][39]

Uses[edit]

Canna indica sps. can be used for the treatment of industrial waste waters through constructed wetlands. It is effective for the removal of high organic load, colour and chlorinated organic compounds from paper mill wastewater.[40]

The seeds are widely used for jewellery. The seeds are also used as the mobile elements of the kayamb, a musical instrument from Réunion, as well as the hosho, a gourd rattle from Zimbabwe, where the seeds are known as "hota" seeds.[41]

As food[edit]

The starch is easily digestible and therefore well suited as a health and baby food. The tubers can be eaten raw or cooked. The starch is also suitable for baking. In South America, the leaves are used to wrap pastries (tamales, humitas, quimbolitos, juanes, etc.), similar to banana leaves or maize leaves. In some areas, the leaves are fed to livestock. The round seeds are pierced in some areas and used as pearls. They are also used as a filling of rattles. From the Indians, the seeds were previously used as gold weights, similar to the seeds of carob (Ceratonia siliqua), as they have a constant weight.[42]

The large rhizomes are edible.[9] They can be eaten raw, but are usually baked. Cooked, the rhizomes become translucent, mucilaginous, and sweet. Starch is produced by grinding or pounding the roots and soaking them in water, separating the starch granules from fibers in the roots. The starch granules of C. indica are also translucent and the largest known from any plant. The starch is occasionally marketed commercially as "arrowroot", a name also applied to the starch of other similar roots crops such as Maranta arundinacea.[43] It was an ingredient in mid-nineteenth century recipes such as cakes[44] and was called tous-les-mois.[45]

The Spanish took notice of achira in 1549 when it was mentioned as one of four root crops being grown for food by the people of the Chuquimayo valley (Jaén province) of Peru. The other three were sweet potato (Ipomoea batatas), cassava (Manihot esculenta), and racacha (Arracacia xanthorrhiza). In 1609, achira was described by a Spanish visitor to Cusco, Peru.[46] In modern times, achira is rarely grown for food, although in the 1960s it was still an important crop in Paruro Province on the upper Apurimac River near Cusco. There, at elevations of up to 2,600 metres (8,500 ft), achira is cultivated and harvested, especially to be eaten during the Festival of Corpus Christi in May or June. The achira rhizomes are wrapped with achira leaves and placed in a pit with heated rocks. The pit is then filled with dirt and the achira is slowly baked underground.[47]

In the 1950s, Canna indica was introduced to China as a perennial ornamental crop. It was mainly planted in parks and home gardens in Guizhou for ornamental purposes. From the late 1950s to the early 1960s, China suffered from a severe food shortage, known as the Great Chinese Famine. During this time, weeds, tree roots, tubers, etc., became an important food source. Canna indica was also part of this famine food. As a consequence, the plant became known as a food crop. Today, the rhizomes are processed to starch, vermicelli, white wine, and ethanol. Due to the use as a food crop and relatively low diseases and pests pressure, Canna indica has become a characteristic crop for large-scale cultivation in China. The research in China mainly focuses on processing methods, and additionally, there are few studies on varieties and cultivation techniques.[48]

The Achira rhizomes consist of 73% water. In addition to 24% starch, they still contain 1% protein, 0.6% crude fiber and 1.4% minerals.[49]

As biodegradable plastics[edit]

In China, Canna indica starch and polyethylene are used as raw materials to produce biodegradable plastics. This type of plastics is affordable and can degrade completely into fertilizer for crop production in just a few months. The method for producing C. indica plastics consists of fusing 60–80% of C. indica starch and 20–40% of polyethylene uniformly at 240 °C.[50]

See also[edit]

References[edit]

  1. ↑ 1.0 1.1 Template:PLANTS
  2. ↑ 2.0 2.1 2.2 "Canna indica L." Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 12 Aug 2016.
  3. ↑ Flora of North America Editorial Committee, e. 2000. Magnoliophyta: Alismatidae, Arecidae, Commelinidae (in part), and Zingiberidae. Fl. N. Amer. 22: i-xxiii, 1-352.
  4. ↑ Hokche, O., PE Berry & O. Huber. (eds.) 2008. New Cat. Fl. Vasc. Venezuela 1-860. Botanical Institute of Venezuela Foundation, Caracas.
  5. ↑ Johnson's Gardeners Dictionary, 1856
  6. ↑ Chaté, E. (1867) Le Canna, son histoire, son culture. Libraire Centrale d'Agriculture et de Jardinage.
  7. ↑ 7.0 7.1 7.2 Khoshoo, T.N. & Guha, I. - Origin and Evolution of Cultivated Cannas. Vikas Publishing House.
  8. ↑ Cooke, Ian, 2001. The Gardener's Guide to Growing cannas, Timber Press. ISBN 0-88192-513-6
  9. ↑ 9.0 9.1 FAO, "Canna edulis Archived 2016-10-05 at the Wayback Machine", accessed 23 Feb 2016.
  10. ↑ Funk, VA, PE Berry, S. Alexander, TH Hollowell & CL Kelloff. 2007. Checklist of the Plants of the Guiana Shield (Venezuela: Amazonas, Bolivar, Delta Amacuro, Guyana, Surinam, French Guiana). Contr. US Natl. Herb. 55: 1-584.
  11. ↑ Flora of China Editorial Committee. 2000. Flora of China (Flagellariaceae through Marantaceae). 24: 1-431. In CY Wu, PH Raven & DY Hong (eds.) Fl. China. Science Press & Missouri Botanical Garden Press, Beijing & St. Louis.
  12. ↑ Nobuyuki Tanaka: "Taxonomic revision of the Cannaceae family in the New World and Asia". In: Makinoa , 1, 2001, pp. 1–74.
  13. ↑ 13.0 13.1 Seeds fired from a shotgun, BBC, 9 February 2012. Retrieved 27 August 2012.
  14. ↑ 14.0 14.1 14.2 14.3 14.4 Tanaka, N. 2001. Taxonomic revision of the family Cannaceae in the New World and Asia. Makinoa ser. 2, 1:34–43.
  15. ↑ illeen, TJ & TS Schulenberg. 1998. A biological assessment of Noel Kempff Mercado National Park, Bolivia. RAP Working Papers 10: 1–372.
  16. ↑ Template:WCSP
  17. ↑ 17.0 17.1 17.2 "www.tropical.theferns.info/viewtropical.php?id=Canna+indica".
  18. ↑ 18.0 18.1 18.2 "www.aujardin.info/plantes/canna".
  19. ↑ Idárraga-Piedrahita, A., RDC Ortiz, R. Callejas Posada & M. Merello. (eds.) 2011. Fl. Antioquia: Cat. 2: 9-939. University of Antioquia, Medellín.
  20. ↑ 20.0 20.1 20.2 20.3 20.4 Reddy, P. P. "Reddy P.P. (2015) Achira, Canna edulis. In: Plant Protection in Tropical Root and Tuber Crops. Springer, New Delhi". Springer. doi:10.1007/978-81-322-2389-4_9. {{cite journal}}: Cite journal requires |journal= (help)
  21. ↑ 21.0 21.1 Xiyou, Zhang (2011). "芭蕉芋高产栽培技术". Xiandai Nongye Keji. doi:10.3969/j.issn.1007-5739.2011.10.074.
  22. ↑ 22.0 22.1 Cook, I. (2001). "The gardener's guide to growing canna". {{cite journal}}: Cite journal requires |journal= (help)
  23. ↑ "Canna Indica Factsheet". CABI Invasive Species Compendium. Archived from the original on 2016-03-04. Retrieved 6 March 2021.
  24. ↑ "National Environmental Management: Biodiversity Act: Alien and Invasive Species Lists | South African Government". www.gov.za. Retrieved 2021-03-06.
  25. ↑ Janey. "Invasive Species South Africa - Protecting Biodiversity from Invasion - Indian shot | Canna indica". www.invasives.org.za. Retrieved 2021-03-06.
  26. ↑ "NSW WeedWise". weeds.dpi.nsw.gov.au. Retrieved 2021-03-06.
  27. ↑ "Canna indica: info from PIER (PIER species info)". www.hear.org. Retrieved 2021-03-06.
  28. ↑ Henderson, L., 2002, ‘Problem plants in Ngorongoro Conservation Area, Tanzania’, Unpublished report submitted to the NCA in November 2002, 15p
  29. ↑ Witt, A.B.R., Kiambi, S., Beale, T. & Van Wilgen, B.W., 2017, ‘A preliminary assessment of the extent and potential impacts of alien plant invasions in the SerengetiMara ecosystem, East Africa’, Koedoe 59(1), a1426. https:// doi.org/10.4102/koedoe. v59i1.1426
  30. ↑ Invasive plants affecting protected areas of West Africa. Management for reduction of risk for biodiversity (PDF). IUCN, Gland, Switzerland and Ouagadougou, Burkina Faso. 2013. ISBN 978-2-8317-1596-4.
  31. ↑ Piperno, Dolores R. (Oct 2011), "The Origins of Plant Cultivation and Domestication in the New World Tropics", Current Anthropology, Vol 52, No. S4, pp. S457-S458. Downloaded from JSTOR.
  32. ↑ Ugent et al, p. 417
  33. ↑ 33.0 33.1 "www.aujardin.info/plantes/canna-brasiliensis".
  34. ↑ 34.0 34.1 34.2 34.3 34.4 34.5 National Research Council. (1989). Lost crops of the Incas: little-known plants of the Andes with promise for worldwide cultivation. National Academies Press.
  35. ↑ 35.0 35.1 Gade, D. W. (1966). Achira, the edible canna, its cultivation and use in the Peruvian Andes. Economic Botany, 20(4), 407-415.
  36. ↑ 36.0 36.1 Lan, Changxian (2020). "芭蕉芋高产高效栽培技术". 乡村科技. [in Mandarin]
  37. ↑ 37.0 37.1 37.2 Caicedo Díaz, G. E., Rozo Wilches, L. S., & Rengifo Benítez, G. (2003). La achira: alternativa agroindustrial para áreas de economía campesina. [in Spanish]
  38. ↑ 38.0 38.1 Kay, D. E. (1973). Root crops (No. 2). London: Tropical Products Institute.
  39. ↑ 39.0 39.1 39.2 García, H., Arias, R., & Camacho, J. (1998). Almidón de achira: Producción y uso industrial. CORPOICA, Programa Nacional de Maquinaria Agrícola y Postcosecha, Tibaitatá. [in Spanish]
  40. ↑ Choudhary et al. (2011) Performance of constructed wetland for the treatment of pulp and paper mill wastewater, Proceedings of World Environmental and Water Resources Congress 2011: Bearing Knowledge for Sustainability, Palm Springs, California, USA, p-4856-4865, 22–26 May.
  41. ↑ Maas-van de Kamer, H. & PJM Maas. 2003. Cannaceae. In: Manual of Plants of Costa Rica, BE Hammel, MH Grayum, C. Herrera & N. Zamora (eds.). Monogr. Syst. Bot. Missouri Bot. Gard. 92: 384-385.
  42. ↑ PF Yeo: Secondary pollen presentation: Form, function and evolution. In: Pl. Syst. Evol., Suppl. 6, 1993, pp. 204–208.
  43. ↑ Lost Crops of the Incas: Little-known Plants of the Andes with Promise for Worldwide Cultivation, National Academies Press, Nation Research Council, p. 27, [1], accessed 22 Feb 2016.
  44. ↑ Beeton, Isabella (1859–61). Beeton's Book of Household Management. England: S. O. Beeton. pp. 863, 864. ISBN 1-870962-15-X.
  45. ↑ "Dictionary.com". Retrieved 2016-07-07.
  46. ↑ Ugent, Donald, Pozorski, Shelia, and Pozorski, Thomas (Oct-Dec 1984), "New Evidence for Ancient Cultivation of Canna edulis in Peru", Economic Botany, Vol 38, No. 4, p. 418
  47. ↑ Gade, Daniel W. (1966), "Achira, the Edible Canna, Its Cultivation and Use in the Peruvian Andes", Economic Botany, Vol 20, No. 4, pp. 409–413
  48. ↑ Zhengbang, Zhou (2009). "Development Situation and Potentiality of Canna edulis in Guizhou". Guizhou Agricultural Sciences.
  49. ↑ Vernon Hilton Heywood: Flowering Plants of the World , Basel-Boston-Stuttgart 1978.
  50. ↑ CN CN101798401B, Template:Cite patent/authors, "芭蕉芋塑料及其生产方法", issued 2012  [in Mandarin]
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