Horticultural vermiculite improves soil aeration while retaining the moisture and nutrients necessary to feed roots, cuttings, and seeds for faster growth. Clean, odourless, nontoxic and sterile, it will not deteriorate, turn mouldy or rot. Very light and easy to handle, it can be used on its own or mixed easily with soil, peat or compost. Also great for using in floral arrangements, and for storing bulbs and root crops. 9 litre bag.