Hey i was just reading up about the three sisters system of gardening that native americans used. Corn, Squash to cover the ground prevent weeds and retain moisture, and Beans to climb the corn and fix nitrogen in the soil. Makes alot of sense to me. although im not a big fan of squash, and i was wondering what plants could possibly be substituted for any of the three sisters which wud still work properly in the system?
Im guessing squash could be substituted by pumpkin? what else? any ideaS?