Soil Moist Natural is a grafted starch polymer derived from corn that is designed to reduce plant waterings by 50% and last in the soil for an entire season. Soil Moist Natural is completely safe and biodegradable like our other Soil Moist polymer products. Soil Moist Natural will hold several hundred times its weight in water, and readily releases it back to the plant as the soil dries out. 3 oz. package treats up to 115 6” pots.