Gro-Sure Vermiculite is ideal for growing from seed and to help both indoor and also outdoor plants. Vermiculite helps to absorb nutrients and prevents them from being washed out. It also releases them to plant roots. Vermiculite is a naturally occurring, non-toxic material. It is heated to a high temperature to produce a lightweight material with a high surface area.

Lightweight
Helps to retain moisture and as well as nutrients
Provides insulation for healthy seed germination