Pumice is a type of igneous rock which is formed from molten or partially molten material. Providing excellent aeration to the soil, pumice loosens heavy clay soil & retains moisture well. With the addition of as little as 10% pumice in potting media & garden soils, you will significantly improve your soil. The porous nature of pumice allows it to hold vital nutrients in surface pores, which helps regulate fertilizer feedings. Pumice is a great bedding additive to worm composters, adding air space, preventing Matting, & helping to control moisture.Nature’s Footprint Pumice Soil amendment
