Common Sources of Phosphorus???

Does anyone know of an innexpensive & readily available source of phosphorus to boost plants into flowering period, preferably organic. Bat Guano is surprisingly not as easy to find as I imagined lol

Does the manure from many animals contain phosphorus?

psychordist said:

Does the manure from many animals contain phosphorus?

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nope, you want bonemeal, available in almost any garden supply store. it'll raise your ph too so watch that if you're high already.