Suståne 5-2-10+Fe combines Suståne organic compost base with iron sulfate organically chelated during the active aerobic composting phase providing for slow release iron for enhance chlorophyll production and turf color without excessive top growth. This is the ideal 1:2 N to K organic based fertilizer for summer and early autumn feeding.
Additional potassium is supplied for sandy soils and USGA type putting greens where potash is often lost through leaching.