Horticultural perlite is a natural, lightweight volcanic mineral with a wide range of applications in plant cultivation. It is used as a growing medium or as a soil admixture. It is chemically neutral, which means that it does not adversely affect the quality of the crop. It does an excellent job of loosening and aerating the substrate, as well as storing water to promote plant growth.

• weight: 10 g 
• form: granules