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What do coffee grounds and human urine have in common? Both are useful and abundant natural forms of fertilizer which don’t have to be bought. Natural fertilizers of course are materials that contain plant nutrients obtained from the remains of an organism, while synthetic chemical fertilizers are nutrients produced from inorganic materials. This article is not concerned with the pros and cons of chemical versus natural fertilizers. It is explained here as to how two household ingredients viz., coffee grounds and urine, can be used as a replacement for commercial fertilizers.