IFFCO Urban Gardens Epsom Salt Meal is a natural and organic fertilizer, named after the town of Epsom in England, where the mineral was first discovered. Also known as Magnesium Sulphate, it's a mineral compound containing Magnesium, Sulphur, and Oxygen which are important secondary Macro-nutrients for plant growth and development. Deficiencies could cause yellowing of leaves, stunted growth, leaf curling, reduced fruit quality, and poor stress tolerance.