Perlite is a naturally occuring, volcanic rock. When furnaced at high temperatures, Perlite "pops" and expands 7 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.
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Our agricultural and horticultural grade products are listed with either OMRI or the California Department of Agriculture for use in organic crop production. Organic certification ensures that our products are free of contamination from heavy metals and pathogens, and produced to the highest standard of quality.
Horticultural Uses for Perlite
- Propagation of seedlings and cuttings
- Soil conditioning
- Roof deck gardens and eco-roofs
- Nursery stock
- Hanging baskets
- Turf enhancement
- Newly planted trees and plants
Our horticultural grade products typically range between 4.5 - 6.5 lb/ft3 loose density. See Tech Info for a Typical Elemental Analysis. Product specifications and availability are subject to change without notice. Contact us for current sizes or to inquire about specialty grades.
See Describing Perlite Particle Size for an explanation of the data shown below.