Perlite Is the Secret to Improving Soil Drainage—Here's How to Use It in Your Garden Perlite's properties make it great for soil drainage, aeration, and healthy plant growth.

Perlite and vermiculite are both used in potting mixes—and both minerals can be used to root cuttings. Perlite is better for propagating plants, since it's more lightweight, says Jabbour.

Perlite Perlite is a lightweight, granular material made from ground volcanic rock that is usually white in color. It is used to aerate compost and improve soil drainage and aeration.

Healthy tomato roots depend on aeration and consistent moisture. A simple soil addition keeps plants thriving while ...

Perlite's properties make it great for soil drainage, aeration, and healthy plant growth.