Soil Mender Rock Phosphate 5 lb. Promotes plant photosynthesis and high yields Helps deter weed growth and is an all natural source of phosphorus for root development & fruit & flower production Current Jan/2013 analysis: Total Nitrogen (N) - 0.0% Available Phosphate (P2O5) - 3.0% Soluble Potash (K2O) - 0.0% We try very hard to present accurate product information and images, but product changes occur constantly. If a particular product feature, color or characteristic is especially important, please contact your seller to verify that information before placing your order. Derived from - Rock Phosphate