A resurgent urban farming is gradually going commercial, as the stories of three fledgling local enterprises testify to. Crain's looks to explain the allure of this profit-driven "back-to-the-farm" movement. It boils down to this: innovation in illicit marijuana grow-ops has made hydroponic gear like grow lamps cheaper and more efficient. Meanwhile, demand for local sustainable produce is through the roof. The approaches and the scale of operations vary (one company does aquaponics, using Tilapia as living fertilizers), but they're all proving viable. [Crain's, previously]
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