Struvite, magnesium ammonium phosphate hexahydrate—is a biogenic mineral of low solubility. For 150 yrs, it has been proposed as a fertilizer but its use has been limited to highvalue crops because of the additional cost of manufacture. With the advent of new interest in removing phosphorus from wastestreams before land application, recovery of phosphorus as struvite has gained new interest. Pot studies show that struvite outperforms diammonium phosphate on a unit-for-unit basis in terms of dry matter production, P uptake, and extractable residual P. Various local wastestreams are candidates for struvite removal with little or no chemical additions using molecular templates as nucleating surfaces.