Brunnings Vermiculite is the perfect medium for use in potting mixes, seed raising and hanging baskets where its light weight and water holding characteristics are valued. It is a clean, sterile, naturally occurring, non-toxic aluminum iron silicate mineral that has been heated to a high temperature to produce a light weight material with a high surface area, ideal for propagation.
- Ideal for aerating potting mix, garden soil and hydroponic mediums.
- Helps moisture retention in sandy soils and aeration of clay soils.
- Ideal for growing fine seeds.