Miracle-Grow Indoor Plant Food Spikes 6-12-6 Guaranteed Analysis: Total Nitrogen (N) (6%) (Urea Nitrogen [0.75%], Other Water Soluble Nitrogen [3.08% Slowly Available Nitrogen from Methyleneurea {3.08%}, Water Insoluble Nitrogen [2.17%]), Available Phosphate (P2O5) (12%), Soluble Potash (K2O) (6%), Magnesium (Mg) (0.50%) (Water Soluble Magnesium [Mg]), Sulfur (S) (2%), Boron (B) (0.02%), Copper (Cu) (0.05%) (Chelated Copper [Cu] (0.05%), Iron (Fe) (0.15%) (Chelated Iron [Fe] [0.15%]), Manganese (Mn) (0.05%) (Water Soluble Manganese [Mn] [0.05%]), Zinc (Zn) (0.05%) (Chelated Zinc [Zn] [0.05%]). Derived from Urea, Methyleneurea, Triple Superphosphate, Potassium Sulfate, Magnesium Sulfate, Boric Acid, Copper EDTA, Iron EDTA, Manganese Sulfate and Zinc EDTA.