Epsom Salt is a source of magnesium that is essestial to plant development. Magnesium is required by plants to produce chlorophyll. Leaf yellowing is a chlorophyll deficiency symptom.
Apply 1/4 cup (4 tablespoons) per 1 - 2 gallons of water. This will cover 500 - 1000 square feet. Apply 2 - 4 applications throughout the growing season.Soil (Roses & Shrubs)
Apply 1/4 cup to the base of the plant early in the Spring, when new growth begins. A Follow up summer application may also be made.