Tada Vargas, Emma Balunek, Katheryn Chen, Patrick Byrne The term ‘Three Sisters’ refers to corn (Zea mays), beans (Phaseolus vulgaris), and squash (Cucurbita spp.) grown together in an ancient Indigenous American companion planting scheme. This video explains what each member of the triad brings to the partnership, and recounts some of the history and distribution of the practice.