Pit Greenhouses or Walipinis. Depending on latitude, but despite above ground air temperatures (and wind chill), 6 to 8 feet down into the earth, temperatures remain fairly constant, between 50 and 60°F. Meaning your pit greenhouse will be much warmer than an above ground greenhouse in winter and that cool earth will keep temps bearable in the summer.
Interested in building your own underground greenhouse? Here are 5 things you should know…This low-tech technology is a true gift from mother nature.For as little as $300 you can create an underground greenhouse that will provide enough food to live on year-round.A walipini, meaning “place of warmth” from the Amaraya Indian language, is an underground greenhouse with a transparent (usually plastic) covering that stays warm by passively soaking up the sun’s heat and absorbing the earth’s…
$300 Underground Greenhouse Grows Food Year Round; An Extraordinary Walipini
How To Build An Underground Greenhouse And Have Food All Year Round — One of the main principles involves embedding the greenhouse in the earth to take advantage of the earth’s constant temperature, to store the solar energy collected during the day.