Soul Flower Farm sits on the edge of a series of rolling hills in California’s East Bay, in the city of El Sobrante located about ten miles from Berkeley. Goats graze on the hillside, and one can hear chickens clucking in their coop. On a wooden shed nearby is a painting of a giant golden sunflower with a vibrant magenta center, across from which the farm announces its name to visitors. On a crisp summer day in 2015, the mural almost sparkles, its vivid colors accentuating the green of the trees around it, as well as the pale, brittle yellow of the grass beneath it, the result of a five-year drought in California, which the state eventually declared over in 2017. Soul Flower Farm’s website describes it as “a small urban farm … striving to incorporate biodynamic farming methods and permaculture design to be self-sustaining.” Under a photograph of its proprietors, Maya Blow and her husband, Yasir Cross, the description continues: “Raising goats, chickens, ducks, bees, and boys, homeschooling, sustainable building, and practicing holistic medicine keeps us busy.”...