It might seem like a myth that you can grow food in an unheated greenhouse during the winter, but we’re here to prove you wrong. As long as there is sunlight, there are several techniques you can use to keep your crops warm enough to harvest well into the cold weather. The key? Layers. Just as you bundle up to go outside during the cold winter months, adding layers to your greenhouse can provide ample insulation to protect against snow and numbing temperatures. #EliotColeman#winter…