"Make your own custom organic fertilizer for almost any plant," says Bill Wolf, co-author of Rodale's Chemical-Free Yard and Garden. In general terms, there are three basic nutrients that a good general organic fertilizer should supply: nitrogen, phosphorus, and potassium. You can save money by buying organic amendments that supply these nutrients and mixing them yourself in the proportions Bill recommends. The specific quantities of each nutrient will vary according to the materials you use, but all will give a balanced supply of nutrients.
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