Alley cropping is the growing of crops between rows of trees. Inga alley cropping consists of growing crops between rows of Inga trees. This has been found to increase yields. It is sustainable as it enables the same plot to be cultivated over and over, thus eliminating the need for the continual burning of the rainforest to get new fertile plots (slash and burn or shifting cultivation). Rainforest Saver is supporting Inga projects in Honduras and Cameroon.
The inga tree is native to many parts of Central and South America, but has been found to grow well in other parts of the world in the tropical rainforest belt.