Jatropha, Jatropha curcas also called physic nut, is a tree of 7 meters high growing on poor degraded soils in subtropical and tropical habitats around the world. It is not eatable and has been used for field delimitation by farmers. Biofuel can be made from Jatropha seeds.

Over the 40 years of its life, each Jatropha tree can absorb approximately 150 kilos of CO₂.