Many growers have forgotten about legumes as nitrogen fixers, or have forgotten how to use them to help build garden soil. This would be unforgettable information except that it is easier to buy a bag of fertilizer. The bag of fertilizer method is easier for sure, but it is more expensive, hard on soil, and is a potential pollution threat to our water ways. Legumes lock up nitrogen for future use. Plants know how to tease nutrients out of soil, and how to attract and make deals with bacteria, fungi, and protozoa for the nutrients they hold in their bodies. Growing legumes enriches the soil and the microbes in the soil with nitrogen that plants are able to use.