Planning on building a strawbale house and attaching an underground greenhouse to the structure, trying to figure out if I should attach the greenhouse to the east/west side of the house or the south side. I was thinking that if it was dug directly south of the house that the sun would heat the ground under the house and it could act as a thermal mass. I'm in northern Ohio and we get pretty cold winters, any thoughts on possible benefits or drawbacks to this idea?
