Epsom Salt (MgSO4 • 7H2O) or magnesium sulfate, is used where magnesium deficiencies occur in alkaline conditions, where a dolomitic lime application is inappropriate. Dolomite is a more practical source of Mg on acidic soils that require lime. Epsom Salt contains 9.8 percent magnesium and 13 percent sulfur. Bulk density of Epsom Salt is 60.5 lbs./ft3. Epsom Salt is readily soluble in water.
OMRI LISTED™ – View Epsom Salt OMRI Certificate (crops)
OMRI LISTED™ – View Epsom Salt OMRI Certificate (feed)