Oklahoma’s Best Kept Secret

SPIZ, which stands for Sulfur, Potassium, Iron and Zinc, has been specially formulated for our Oklahoma soils. The SPIZ formulation has been around for many many years and was aquired by Eckroat Seed co. over a decade ago. We are still blending the original formula. If your looking for a thick and that picturesque dark green then try our SPIZ fertilizer.