Ferti-lome Soil Acidifier Plus Iron Formulation: Contains iron, sulphur, magnesium & copper. Helps reduce alkalinity in alkaline soil while supplying trace elements vital to acid loving plants such as roses, gardenias, azaleas, holly rhododendron, magnolia, fruit trees & vegetables. Application Rate: Shake well before use and mix at rate of 2 tablespoons per gallon of water. Pour diluted mixture on ground over the root feeding area of the plant.