Perlite is a volcanic glass that is often used in gardening due to its lightweight, porous nature that aids in healthy plant development. "It is made from a type of volcanic glass called obsidian," ...

Perlite, a volcanic rock, is a common ingredient in potting mixes. It improves drainage, aeration and water retention in soil. Perlite is lightweight and can be added to in-ground gardens, but it's ...

A gardener adds soil to small plastic flower pot with a trowel. - Giselleflissak/Getty Images We may receive a commission on purchases made from links. If you've ever read the care instructions for a ...

Making changes away from perlite in propagation mixes requires paying strict attention to the impact on air space and water ...