A method of soil retention uses a soil additive that increases water retention of basic potting soil. The soil additive, either premixed with or added to soil, is biodegradable, ultra-absorbent, and generally safe for the environment. When water is added to the soil additive mixture, moisture is retained within the additive to be disbursed throughout the soil and thereby to the plant within the soil, over a prolonged period of time, e.g. fourteen days to twenty eight days, depending on ambient conditions and the plant.
