Sul-Po-Mag (Langbienite) 50 Pound bag

Sul-Po-Mag contains 22% potassium, 22% sulphur and 11% magnesium. 

Also known as sulphate of potash magnesia, Sul-Po-Mag has been utilized in agriculture for a long time as a soil conditioner. Made up of sulphur, potassium and magnesium, Sul-Po-Mag is an economical amendment for restoring depleted soils.