Ferti-Lome Azalea, Camellia, Rhododendron Food 9-15-13 helps to provide the needed soil acidity for your plants to reach their full potential. Through plant food and trace elements that are provided by Ferti-Lome Azalea, Camellia, Rhododendron Food 9-15-13 your azaleas, camellias, and rhododendrons will be more beautiful than ever. Use Ferti-Lome Azalea, Camellia, Rhododendron Food 9-15-13 throughout the entire year. Active Ingredient:Total Nitrogen – 9% Available Phosphate – 15% Soluble Potash – 13% Boron – 0.02%, Copper – 0.05%, Iron – 0.10%, Manganese – 0.05%, Zinc – 0.05%