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Soviet Fruit Trenches: Cultivating Subtropical Plants in Freezing Temperatures

solar.lowtechmagazine.com Fruit Trenches: Cultivating Subtropical Plants in Freezing Temperatures

During the first half of the twentieth century, Soviet citrologists grew (sub)tropical plants in temperatures as low as minus 30 degrees Celsius – outdoors, and without the use of glass or any fossil fuel-powered assistance.

Fruit Trenches: Cultivating Subtropical Plants in Freezing Temperatures

Damn this is cool

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