Hydrated vitreous rock used to help trap air in soil or hydroponics.
This product allows soil to have better drainage capabilities. Add accordingly. This is a great growing medium for hydroponic carrots, onions, radish and other tubular and bulb type plants that need a 12-inch depth for proper growth.
Perlite is a naturally occurring volcanic rock and is 100% natural.When furnaced at high temperatures, Perlite "pops" and expands up to 15 times its original volume. The resulting, lightweight particles are made up of microscopic spheres with a porous, broken surface that promotes plant growth. This allows aeration and drainage of the root system and provides holding capacity for water and nutrients.