Soil Moist Plus 7-7-7 granular is a synthetic acrylic water storing polymer blended with an 8-9 month timed release 7-7-7 fertilizer. It is a safe, non-toxic polymer used in all horticultural and landscape applications. When used according to the application rates, SOIL MOIST PLUS 7-7-7 will reduce irrigation frequency by 50%** and last 3-5 years** in the soil. The fertilizer is effective in the soil for 8-9 months at 70°F.