A form of volcanic glass, baked to form a light weight and PH neutral growing medium. It is very effective in allowing more air into the root zone while improving drainage.
Perfect for short term soil aeration
Unique moisture exchange property
Resists soil compaction
When making a new soil blend use at 20-30% of base mix for good soil structure, aeration and drainage.
To make your own seedling start substrate mix 1 part perlite to 3 parts coco-peat or peat moss. Inoculate with Explogrow and Forest Roots Molasses for explosive germination.