Reader Arden Schmitt recently built a subterranean greenhouse in Southern Idaho and was kind enough to submit a brief description and photos. The greenhouse is partially underground, contains pains of glass and 3 dead air spaces so it heats and cools inexpensively. Recycled patio doors were used for the glazing at a cost of only $10 each.
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The greenhouse has dimensions of 42’ x 16’ and has a 6-foot wall on the north.
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The concrete walls are heated with solar panels (it is the tubing in the walls.) At one time during the past winter it -6 F outside it was 46 F inside.
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The cold frames in the front are vented into each other while being controlled with a thermostat and fan. The hot air in the greenhouse is also redirected through underground irrigation pipe in the growing beds which saves all that heat for nighttime use.
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Tomatoes, green beans, Swiss chard, cucumbers, crookneck & summer squash were raised during the winter.
Want to share pictures of your greenhouse or garden project? Email the pictures and a brief description to Robin@MyGardenAndGreenhouse.com.
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