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RE: Permaculture - Green manure - Plants that contribute to nitrogen fixation (Lesson 6 + mini contest)
Hi and greetings from Colombia. It's great to see a post about permaculture here. The most common plant that could be used as green manure is the the cowpea, here we call it "frijol cabecita negra".
Thank you for stopping by and writing the comment. Yes, all the beans and cowpea are very universal and it can be used as the green manure in most of climate zones.