Sul-Po-Mag 0-0-21.5 Sulfate of Potash Magnesia (K-Mag) Greenway Biotech Brand 25 Pounds

Sulfate of Potash Magnesia, also known by the brand name K-MAG or Sul-Po-Mag, is a Potash Fertilizer containing Potassium 21.5%,10.8% Magnesium, and 22% Sulfur. It has a very low percentage of Chloride (under 2.5%), which minimizes the potential for fertilizer "burn".