Perlite is a lightweight, naturally occurring mineral that is often used in horticulture to improve soil structure and drainage. It is a porous material that can hold onto moisture and nutrients, making it ideal for use as a growing medium. Perlite is also inert, which means that it does not contain any nutrients or minerals that can affect plant growth.

In gardening, perlite is often used as a component in potting mixes, seed starting, and as a top dressing for houseplants. It can also be added to garden beds to improve soil aeration and drainage. Perlite is easy to use and is suitable for a wide range of plants, making it a popular choice among gardeners who want to ensure healthy, thriving plants.