K-Mag NATURAL is not synthetic. While synthetic fertilizers are chemically manufactured, K-Mag NATURAL is a naturally occurring, nutrient-dense mineral found deep beneath the New Mexico desert. Known as “langbeinite,” this mineral is extracted, crushed, sized, washed and sold as K-Mag NATURAL.

K-Mag NATURAL is listed by the Organic Materials Review Institute (OMRI) for use in organic crop production. The “OMRI-Listed” mark is the industry-recognized seal of approval for inputs used in organic farming.

No other OMRI-listed fertilizer supplies the unique 3-in-1 combination of 22% K2O, 11% Mg and 22% S found in K-Mag NATURAL. And don’t forget, this fertilizer is virtually 100% water-soluble and in the sulfate form which means nutrients are immediately available for the roots to use. And, it’s low in chloride, helping to minimize the potential for fertilizer burn.