Magnesium Sulfate Fertilizer

Water-Soluble Magnesium Sulfate Fertilizer

Magnesium sulfate (MgSO4) is one of the most versatile and essential nutrients in professional horticulture — delivering both magnesium and sulfur in a single, highly soluble compound.

Why Magnesium & Sulfur Matter

• Magnesium is the central atom in the chlorophyll molecule, driving photosynthesis and energy conversion
• Sulfur supports enzyme activity, protein synthesis, and overall plant vigor
• Both nutrients are rapidly depleted in sandy, low-CEC, or high-production soils

Key Features

• Extremely high water solubility — forms true clear solutions
• Compatible with most soluble nutrient programs (except concentrated calcium or phosphorus solutions)
• Suitable for OMRI-certified organic programs (select grades)

Ideal Application Methods

• Fertigation: center pivot, drip/trickle, micro-jet
• Hydroponic nutrient solutions
• Foliar spray programs
• Soil amendment for Mg-deficient fields