A natural and non-toxic volcanic rock that is lightweight and a microporous medium. Perlite can be used to improve aeration.
Perlite (5L) by GreenSpade
Perlite is a natural and non-toxic neutral volcanic rock put through a heated process to produce a lightweight, microporous medium.
Application: Mix into compost or soil to improve drainage and aeration, stimulates root development and vigorous growth and retains moisture.