underground greenhouse Archives – The Green Optimistic green tech news, since 2008 Mon, 25 Feb 2013 15:43:53 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 Underground Greenhouse Allows Year-Round Gardening for $300 https://www.greenoptimistic.com/underground-greenhouse-20130225/ https://www.greenoptimistic.com/underground-greenhouse-20130225/#respond Mon, 25 Feb 2013 15:43:52 +0000 https://www.greenoptimistic.com/?p=33958 Taking a cue from the Aymara Indians, gardeners are realizing that walipini, an underground greenhouse (or pit greenhouse), allows them to grow year round. Typically, greenhouses are glazed structures. They are expensive to build and costly to heat during the winter. Greenhouses in colder climates also have shorter growing seasons. Walipini were originally developed in […]

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