Perlite is sterile; lightweight; and doesn't change the soil pH. It can be reused often as long as the soil is free from diseases or pests. Adding perlite to soil helps prevent soil from forming clumps that impede water drainage. Proper drainage helps prevent root rot and fungal soil diseases.
- Improves soil drainage; moisture retention and improves air circulation.
- Functions as a base for rooting and hydroponic gardening.
- Perlite is a volcanic rock that increases circulation and moisture retention in soil.