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," ...

A Row Of Cucumber Seedings With Labels Growing In Pots Those little squishy white balls in your potting soil aren’t styrofoam. They’re actually perlite, AKA volcanic popcorn. In the building industry, ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. suvian / Getty Images Every gardener wants nutrient-rich soil. But just because your yard doesn’t have enough nutrients naturally ...