Regional Crop  Management: Standard  Staple Crop: Balanced carb

A water plant, it requires a rich soil, preferably growing in still water[238]. It can be grown in still or slowly flowing water[200]. In cultivation in temperate greenhouses, the plant is often grown as an annual[200]. It requires about 0.75 cubic metres of root run[200]. This species is not very cold hardy. One report says that it succeeds in zone 8[200] which would mean that it tolerates temperatures down to between -5 and -10°c but this must be viewed with some doubt. It is unlikely to succeed outdoors in Britain, at least when grown as a perennial[K]. Frequently cultivated as an edible plant in China and India, the seeds are normally available in Chinatown markets in the West[183].

Carbon Farming

• Regional Crop  These crops have been domesticated and cultivated regionally but have not been adopted elsewhere and are typically not traded globally, Examples in this broad category include perennial cottons and many nuts and staple fruits.
• Management: Standard  Plants grow to their standard height. Harvest fruit, seeds, or other products. Non-Destructive management systems.
• Staple Crop: Balanced carb  (0-15 percent protein, 0-15 percent oil, with at least one over 5 percent). The carbohydrates are from either starch or sugar. Annuals include maize, wheat, rice, and potato. Perennials include chestnuts, carob, perennial fruits, nuts, cereals, pseudocereals, woody pods, and acorns.