Yep, the Amerindians planted those three sisters (maize, beans, squash or pumpkin) together. Got (nearly) three times the use out of the land. Planted (if I am remembering corrrectly) maize, gave it two weeks start, then beans when the maize was growing well so it would form a trellis for the beans, gave that another two weeks start, then squash or pumpkin which would provide a lving mulch with the leaves shading the ground that everything was growing in. The beans fertilised the soil for the next crop, so there was nitrogen for the next crop of maize.
Check details - that's the principal. You do need to give each one a start in that order or the pumpkin will just swamp everything, or the beans pull down the maize seedlings.