American groundnut
Apios americana
A North American vine legume grown for its protein-rich edible tubers, historically an important indigenous food crop.
Family
Fabaceae
Temperature
10-20°C (absolute 8-30°C)
Rainfall
1000-1200mm (absolute 700-1500mm)
Altitude
1000m
Soil pH
5-7.5 (absolute 4.5-8.5)
Soil types
Moist, well-drained fertile soils.