Monterey Epsom Salt 4lb Promotes bloom in roses and other flowering plants Absorbed through the roots and foliage of plant Epsom Salts is a source of Magnesium that is essential to plant development It is required by plants to produce chlorophyll It also helps plants absorb Phosphorus Epsom salts Promotes blooms in roses and other flowering plants Absorbed through the roots and foliage to help plant produce chlorophyll Great for use on gardens 4-Pound