Vermiculite is a form of expanded mineral rock which is lightweight with high water holding capacity. It improves soil aeration while retaining heat and moisture. Ideal for germinating seeds and growing bulbs.
Vermiculite can be mixed into compost or soil to improve their drainage and aeration qualities, it also stimulates root development, vigorous growth and retains moisture.
· 100% Expanded Mineral Rock (Fine Grain 1-2mm)