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Build A $300 Underground Greenhouse For Year-Round Gardening (Video)

Discussion in 'Topical Discussions (In Depth)' started by newmisty, Nov 4, 2013.



  1. newmisty

    newmisty Duppy Conqueror Midas Member

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    walipini-2.jpg

    Growers in colder climates often utilize various approaches to extend the growing season or to give their crops a boost, whether it's coldframes, hoop houses or greenhouses. Greenhouses are usually glazed structures, but are typically expensive to construct and heat throughout the winter.

    A much more affordable and effective alternative to glass greenhouses is the walipini (an Aymara Indian word for a "place of warmth"), also known as an underground or pit greenhouse.

    First developed over 20 years ago for the cold mountainous regions of South America, this method allows growers to maintain a productive garden year-round, even in the coldest of climates. Here's a video tour of a walipini that even incorporates a bit of interior space for goats: Read More: http://www.natureknows.org/2013/11/build-300-underground-greenhouse-for.html



    How a Walipini works and how to build one

    walipini3.jpg
    It's a pretty intriguing set-up that combines the principles of passive solar heating with earth-sheltered building. But how to make one?From American sustainable agriculture non-profit Benson Institute comes this enlightening manual on how a walipini works, and how to build it: The Walipini utilizes nature’s resources to provide a warm, stable, well-lit environment for year-round vegetable production. Locating the growing area 6’- 8’ underground and capturing and storing daytime solar radiation are the most important principles in building a successful Walipini. The Walipini, in simplest terms, is a rectangular hole in the ground 6 ‛ to 8’ deep covered by plastic sheeting. The longest area of the rectangle faces the winter sun -- to the north in the Southern Hemisphere and to the south in the Northern Hemisphere. A thick wall of rammed earth at the back of the building and a much lower wall at the front provide the needed angle for the plastic sheet roof. This roof seals the hole, provides an insulating airspace between the two layers of plastic (a sheet on the top and another on the bottom of the roof/poles) and allows the sun's rays to penetrate creating a warm, stable environment for plant growth.

    walipini.jpeg.492x0_q85_crop-smart.jpg

    This earth-sheltered greenhouse taps into the thermal mass of the earth, so that much less energy is needed to heat up the walipini's interior than an aboveground greenhouse. Of course, there are precautions to take in waterproofing, drainage and ventilating the walipini, while aligning it properly to the sun -- which the manual covers in detail. Best of all, according to the Benson Institute, their 20-foot by 74-foot walipni field model out in La Paz cost around $250 to $300 only, thanks to the use of free labour provided by owners and neighbours, and the use of cheaper materials like plastic ultraviolet (UV) protective sheeting and PVC piping. Cheap but effective, the underground greenhouse is a great way for growers to produce food year-round in colder climates. More over at the Benson Institute and the Pure Energy Systems Wiki. Source: http://www.treehugger.com/

    Read More: http://www.natureknows.org/2013/11/build-300-underground-greenhouse-for.html
     
    Last edited by a moderator: Dec 26, 2015
    shamash, Ragnarok, hoarder and 3 others like this.
  2. TnAndy

    TnAndy retired guy Platinum Bling

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  3. Rusty Shackelford

    Rusty Shackelford Midas Member Midas Member

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    Tomatoes suck TNAndy!!;)
     
  4. Lugnutzpop

    Lugnutzpop Silver Member Silver Miner

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    Cool, been thinking of doing something like this for a while now.

    Question.... How does one get pollination too take place in the middle of winter? Fans?:confused:

    -L
     
  5. Hope+Change

    Hope+Change Gold Member Gold Chaser

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    This method requires a low water table, otherwise you'll have walls made out of mud.

    With that said, it is hands down the cheapest and most effective greenhouse construction.
     
  6. TnAndy

    TnAndy retired guy Platinum Bling

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    With tomatoes, you actually take a pencil and shake the flower ( they do make an electric vibrating version for large greenhouses).
     
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  7. AgAuGal

    AgAuGal Founding Member Founding Member Site Mgr Site Supporter

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    that top picture must not be in a place that gets lots of snow....I love TnAndy green house, wish I could build one....
     
  8. nickndfl

    nickndfl Midas Member Midas Member Site Supporter ++

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    Won't work in Miami.
     
  9. Goldhedge

    Goldhedge Moderator Site Mgr Site Supporter

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    Oooooh! Tomato sex with vibrators....:banana:
     
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  10. Argentium

    Argentium Midas Member Midas Member

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    If you tried this living somewhere with neighbors, expect a visit from the local PD, DEA, or assorted jack-booted thugs.
     

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