Companion planting is based around the idea that certain plants can benefit others when planted next to, or close to one a nother.  Companion planting exists to benefit certain plants by giving them pest control, naturally without the need to use chemicals, and in some cases they can give a higher crop yield Generally, companion planting is thought of as a small-scale gardening practice, but it can be applied on larger-scale operations. It has been proven that by having a beneficial crop in a nearby field that attracts certain insects away from a neighboring field that has the main crop can prove very beneficial. This action is called trap cropping. COMPANION PLANTING Beans: All bean enrich the soil with nitrogen fixed form the air, improving the conditions for whatever crop you plant after the beans are finished. In general they

Source: Companion Planting – Mary’s Heirloom Seeds