Fitchburg Fields offers a workshop on how to make Hoop Houses. Nox Seehafer has taught it in the past. You can purchase supplies from him. You can grow plants all year long. Comes with an insulated plastic blanket over the thick greenhouse-grade plastic. Cover with the blanket on the coldest days. Plants won’t grow in the dark, but they also won’t die. Uncover and use just the plastic when weather permits. Can eat brussel sprouts, kale, spinach and other plants all year round. All will be madly growing and ready for a nice harvest by March. Cost: about $35/each for supplies for a mini hoop house that’s 5′ long, 3′ wide and 3′ high in the center of the arch.