This species is closely related to Indigofera flavicans, having a more northerly range than that species[
Indigofera diphylla is a semi-woody, spreading, perennial herb growing 30 - 60cm tall[
The plant is harvested from the wild for local use as a dye and medicine, it is also sometimes grown to help stabilize sand dunes.
Sub-Saharan tropical Africa - Mauritania and Senegal east to Sudan.
Fixed sand dunes in dry sandy areas[
|Other Uses Rating||
|Cultivation Status||Cultivated, Wild
This species has a symbiotic relationship with certain soil bacteria, these bacteria form nodules on the roots and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby[
The plant is used medicinally[
Plants can be used to help stabilize sand dunes[
The plant is the source of a blue dye[
Seed - it has a hard seedcoat and may benefit from scarification before sowing in order to speed up and improve germination. This can usually be done by pouring a small amount of nearly boiling water on the seeds (being careful not to cook them!) and then soaking them for 12 - 24 hours in warm water. By this time they should have imbibed moisture and swollen - if they have not, then carefully make a nick in the seedcoat (being careful not to damage the embryo) and soak for a further 12 hours before sowing.
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