Polysulphate Premium is an exceptional fertilizer from ICL’s PLUS family of fertilizers, which consists of uniform, robust spheres of Polysulphate, the world’s only natural 4-in-1 fertilizer. Polysulphate Premium’s spherical shape and smooth surface protect from abrasion, humidity, and damage and deliver a steady flow rate and a consistent broad spread during application. It easily blends with other granulated fertilizer materials, having an attractive appearance in the blends.