This sterile, white propagating medium is used to keep soil loose thereby allowing air and water to reach plant's roots. Perfect amendment for propagation and seed cultivation, plug production and transplants, interiorscape and planter growing, composting, hydroponic cultures, turf and lawns and around shrubs, trees, and landscaping. 4 cubic foot plastic bag resists moisture.
Perlite has been used for many years throughout the world for soil conditioning and as a component of growing mixes with materials such as peat moss or bark. Extensive studies have shown that the unique capillary action of perlite makes it a superior growing media for hydroponic cultures.