Nanabush Food Forests is a partner of Just Food (justfood.ca). Though we don't have a plan to use the greenhouse at the Just Food farm where we are establishing our 'flagship' food forest, we are involved in a very unique project to heat the greenhouse. Based on the same concept that we use in the food forest with our hugelkultur mounds, we are working on a project to help heat the Just Food farm greenhouse by harvesting the heat off a souped up compost pile (check out the Jean Pain composting method).
Tomorrow evening (Thursday, October 8th), I will be pitching to Soup Ottawa, at the Clocktower Brew Pub, for some funding to buy the pipe, pump and assorted materials required to do this interesting experiment. If you are interested in helping out, either with funds or your time (and muscles), please contact me at email@example.com.