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, vermiculite, and zeolite are among the most popular soil additives in gardening and are often offered together.

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 ...

Learn how to make a DIY potting mix starring this ingredient, which helps plants hold water and retain nutrients. Whether you are new to container gardening or have been growing greenery this way for ...