Evolution of an Adirondack GardenerPART TWOA hoop house is a gardening game-changer. Coleman’s Maine market garden is on the 45th parallel, just about where Elizabethtown is (we’re even a little farther south). Hoop house in winter. Encouraged by the first hoop house and the success of winter gardening, I built a second house, twice as long. The soil samples I’ve taken are being tested at the University of Maine for heavy metals.