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raised herb spiral beds = love.
Original pinner: I love this idea, originally it was innovated because of the droughts in Africa. I learned of it when studying in my Global Sustainability class. Not only is it very efficient, 2 gardens like this can feed a family of 10 all year round & use as little as a gallon of water a day, it's an awesome concept
building an inexpensive greenhouse with step by step pictures.