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Sinclair Horticultural Grade Vermiculite is porous so it helps retain water & nutrients in the soil for release to plants. Vermiculite is a natural, non-toxic mineral that is lightweight and has thermal insulation properties which makes it ideal for use as a pot topper.
Sinclair Vermiculite is perfect for a range of gardening tasks and helps compost hold onto vital plant nutrients by increasing its water retaining capacity. Vermiculite is a naturally occurring mineral and since it has been heated to high temperatures produces lightweight, absorbent flakes that encourages strong and healthy seedling growth.
Extracted from mines, Vermiculite is a naturally forming mineral and once heated gives excellent insulation and drainage for your seedlings.