After seeing Ben Falk's Jean Pain mound heated greenhouse, I was reminded of this article from a few years back on making a simple compost heated cold frame
For the last few weeks of seedlings which have been started indoors. The idea is basically to build a 3ft cubic compost pile, then a small greenhouse over the top. This seems like a great solution for home scale gardeners without a heated greenhouse in northern climates. I believe the article came out prior to the readily available hoop bender, which could be utilized to make the frame. Anyone have experience with this model or others
http://www.mofga.org/Publications/MaineOrganicFarmerGardener/Winter20072008/GrowHeatLovingPlants/tabid/842/Default.aspx
