Tephrosia vogelii herb in Gucha, Kenya

Tropical America, South and Southeast Asia, as well as tropical Africa are all home to this herb's native range. Due to its low nutritional value and potential for poisoning fish and some other animals, it is not acceptable for ingestion by humans or by livestock.   
It can intercrop with other plants and be used as a source of green manure because it is a nitrogen-fixing plant.

 
It is widely referred to as the "vogel's tephrosia," and farmers in many African nations use it to get rid of pests on livestock, control pests in cultivated fields as an organic pesticide, enhance soil fertility, treat internal worms and skin conditions, and store crops.