Build an Earth-Sheltered, Energy-Efficient Greenhouse

Triple the length of your growing season with this simple, energy-efficient greenhouse design.

Working in Energy Efficient Greenhouse
A friend spreads growing medium in Mike Oehler's original earth-sheltered, energy-efficient greenhouse.
Photo by Mike Oehler
Earth Sheltered Energy Efficient Greenhouse
Prolong your growing season and save energy with this earth-sheltered, energy-efficient greenhouse design.
Illustration by Diane A. Rader
Watering Vegetable Crops
The author waters a vegetable crops in his sunniest earth-sheltered, energy-efficient greenhouse in November.
Photo by Mike Oehler
Second Earth Sheltered Energy Efficient Greenhouse
Mike Oehler's second earth-sheltered, energy-efficient greenhouse under construction.
Photo by Mike Oehler
Prolonged Grow Season
To water or weed the plants, I had to open the pit and expose them to the air. Most plants will not grow in temperatures lower than 40 degrees; so, on a 30-degree day I was destroying the cozy, sun-baked 50- or 60-degree environment, shocking the small starts.
Photo by Fotolia/ngarare

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