Carl Pool's Iron Chelate is the most effective chelate available to reduce chlorosis and promote stronger, healthier plants. Contains Iron DTPA 11%. Good for use on Azaleas, Camellias, Gardenias, Hibiscus, Holly, Pyracantha, Roses, Mums, Carnations, Gladiolas, Petunias, Trees, Shrubs, Fruit Trees, Vegetables, Citrus, Turf, Field Crops, an...