Cream-colored squash and tepary beans ripen on vines and bushes whose roots grasp the heavy clay soil of Arizona’s Tohono O’odham reservation. Prickly pears, oregano and agave grow beneath a mesquite tree in the town of Patagonia, Arizona. And in a downtown Tucson garden, desert ironwood trees shade chuparosa shrubs and wolfberries.
These are just a few of the food plants native to various regions of the Sonoran Desert. It’s a notoriously hot (104°F in August) and dry (it gets three to 20 inches of rain annually) hook of land that juts up from Northwestern Mexico into…
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