The Underground Greenhouse-Year-Round Food Production in Cold Climates

Posted: October 11, 2014 by gamegetterII in Growing your own food
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barb“As more people become aware of the importance of growing their own food, social media has become a primary way ideas are shared. One of these ideas which is often seen on Facebook and Pinterest is the walipini underground greenhouse.

This greenhouse claims to grow food year-round and only cost $300 in building materials. For lots of gardeners, particularly those in cool climates with short growing seasons, a greenhouse is almost a must-have. Let’s take a look at the advantages of an underground greenhouse:

Takes advantage of thermal mass. When you dig down even just four feet, the temperature changes dramatically. Frost lines generally are three to four deep, so a six to eight foot walipini is completely protected from frost. One walipini owner claims that his greenhouse keeps pretty steady 70 degree Fahrenheit or warmer temperatures when it’s 10 degrees outside. Because underground greenhouses are warmed by thermal mass on all sides, you really can’t lose any warmth compared to a traditional greenhouse.”

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