True indigo
Indigofera tinctoria
A leguminous shrub historically cultivated as the primary source of natural indigo dye.
Family
Fabaceae
Temperature
22-28°C (absolute 7-32°C)
Rainfall
1300-1700mm (absolute 640-3000mm)
Soil pH
6-7 (absolute 4.3-8.7)
Soil types
Well-drained fertile loamy soils.