“We don’t really have a cold problem like a lot of people think we do,” says Solotki. “We have a heat problem, because of the sunlight.” 24 hours of summer daylight keeps the greenhouse balmy, while accelerating vegetable growth. Crops grow so speedily here that in early July, three weeks into harvesting, Solotki merrily reported collecting over 220 pounds of food. The North’s midnight sun makes greenhouse gardening surprisingly productive, with everything from leafy greens, squash, tomatoes, and beds of flowers soaking up the extra light.