An underground greenhouse is a smart option for those who love gardening, but unfortunately live in a cold climate. You need only, to build your greenhouse few feet into the ground with a slopping roof made from clear corrugated roofing. Earth’s natural thermal insulation, combined with passive heat of the sun will result in significant energy savings. An underground greenhouse will extend over the annual gardening season. You will be able to have fresh fruits and vegetables most of the…
