Corn beans and squash are the three?

Corn, beans, and squash are often referred to as the "Three Sisters," a traditional agricultural trio used by many Indigenous peoples in North America. These crops are interdependent; corn provides a structure for the beans to climb, beans enrich the soil with nitrogen, and squash spreads along the ground, helping to suppress weeds and retain moisture. Together, they create a sustainable and efficient farming system that enhances biodiversity and yields. This cultivation method exemplifies the principles of companion planting and permaculture.