A natural non-toxic growing medium that is a super-absorbent, lightweight, porous material which soaks up 150% of its weight in water and nutrients and slowly breaks down, providing a gradual release of water to plant roots. Diatomite rock improves aeration, helps loosen clay soils and reduces watering in hot summer months. It is an ideal alternative to perlite in container potting mediums and an outstanding amendment for heavy garden soils.

$7.99