ICL Sierraform® GT Anti-Stress 15:0:21.6 + 1 Fe & 4 Si 20kgSierraform GT Anti Stress helps your turf through stress and keeps it looking in peak condition. High potassium is perfect in the summer or autumn, in areas of fine turf. Slow release nitrogen to support growth for 6 8 weeks and minimize growth surges. Its single compound micro granules feature our special patented MU2 and SilK coating technologies. Key features: High K analysis for abiotic stress tolerance and late season applications. Slow release N