Ahead, we spoke with two gardening experts to explain what perlite is, how it works, and how you can use it in your own gardens.

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Perlite is better for propagating plants, since it's more lightweight, says Jabbour. However, she uses vermiculite for seed starting, as this mineral is easier to add to the soil surface.

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