the 3 sisters: corn runner beans (perhaps American groundnut) pumpkin (perhaps amaranth and sunflowers)

modified 3 sisters (requires less water): sorghum cowpeas sweet potatoes tomatoes bell peppers chia

similar to last but different species: millet peanuts chick peas lentils mung beans sesame

the rice patch (plenty of irrigation): rice corn sweet peas (any water tolerant legume)

the potato patch: potatoes bush beans quinoa

wheat patch: wheat bush beans (could be also sunflowers and quinoa)

vegetable patch: Lettuse celery brassicas onions garlic turnips

three brothers: (the perennial version of the three sisters) Apios americana (American groundnut) (Amphicarpaea bracteata (hog-peanut) works better) Helianthus tuberosus (sunchoke) Wild Strawberries

Explanation: In North America, indigenous peoples widely used an agricultural system known as the 'Three Sisters'. Squash, corn, and beans would be planted near each other, and each of the three crops would assist the growth of the other. This practice is known, in a broader sense, as 'companion planting'. While companion planting was known as a concept to European cultures, it was much less widespread.

Typically of European colonists of the period, the system was ignored when colonists began moving into the area, and it would take hundreds of years after colonization for the efficiency of the system to be fully appreciated by European-derived cultures.

Upvoting for correct use of POV

My favorite is the Irish, who upon first learning of pumpkins immediately discarded turnips for carving faces into. "Fuck this woody root - gimme that big orange bastard so I can carve a face into it!"

For anyone wanting to try this in their backyard, don’t. Yes, it absolutely works and will produce more yield per square foot and per gallon of water, particularly in dry climates. However, it is a lot more manual labor throughout the growing season and at harvest. It’s worth it for subsistence agriculture, but not at all for hobby gardens.

Modern 3 sisters: Corn (industrial, not sweet) Soy Beans Anhydrous ammonia

Three cousins for all who are too lazy to remember what goes with what: Almost any vegetable + aromatic herb + Allium spp.