your gypsum source in Chewelah, Washington

Organic Soil Amenders is an incorporated company in the state of Washington, offering finely ground organic and non-organic gypsum from natural mine sources.

An important component for soil health, our gypsum supplies calcium and sulfur as well as 6 trace minerals. With proper application, you can achieve immediate as well as long-term improvements in the health of your soils and the crops and plants you produce.

We would be happy to discuss the costs and potential of gypsum amendments for your operation.  We can also assist you with testing the soil to determine your exact needs.  Call or visit to obtain the best natural soil builder you can find!