Human urine as fertilizer? It’s not as odd as it sounds – urine is rich in nitrogen, phosphorus and potassium, the same nutrients found in store-bought fertilizers. Fresh from a healthy person it’s nearly sterile (unlike manure). Of course, one should first dilute it before applying it to soil. also avoid getting it on the leaves, to avoid any burning. There are botanic gardens in Europe that encourage men to relieve themselves in private sawdust filled stalls, in order to save money on fertilizer
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