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," ...

Those little squishy white balls in your potting soil aren’t styrofoam. They’re actually perlite, AKA volcanic popcorn. In the building industry, perlite is used in ceiling tiles and lightweight ...

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 ...

If you're new to growing houseplants, you may have already realized that having the proper potting soil is important. And if you're already a houseplant aficionado, you know there are ready-made soil ...

The reasons for making your own potting soil are much the same as for making your own bread. You often get a better product than what you can buy, and making it brings its own satisfaction. Potting ...

The word “vermiculite” is defined in Henry Beard and Roy McKie’s hilarious “A Gardener’s Dictionary” as an “obscure order of nuns devoted to gardening.” In fact, it is a silicate material similar to ...

Repurposing old potting mix can be good for the plant and the planet – but how do you know whether to re-use or replace?