Greenhouses are very popular for extending the growing season, but heating them in cold climates is expensive. In contrast, pit greenhouses — greenhouses built into the earth — use free solar energy from the sun for heating. The temperature of the earth (usually around 55-58 degrees Fahrenheit) helps stabilize the temperature in the greenhouse. One … Read more
The year-round greenhouse at Sandhill Farm is built with sustainable materials, including earthbags for lower walls and light straw/clay in upper walls. Greenhouse segment starts at 1:12. Maybe someone from Sandhill Farm can chime in here and leave some comments. More info: Sandhill Farm Dancing Rabbit TV
Earthbags are ideal for building greenhouses due to their resistance to moisture damage. Most anyone can build with earthbags, which can cut construction costs. When filled with insulation such as perlite or scoria, earthbag walls and foundations enable you to grow plants year-round. Excess heat from a greenhouse attached to your home, like the one … Read more