Vermiculite, Fertilome 8 Qt, Great Soil Additive, Seed Starting, Hydroponic Media

100 Percent Horticultural Grade VermiculiteVermiculite is the mineral Mica, super-heated to expand much like a accordion. This mineral is often used in soil mixes to increase water holding. Many growers use vermiculite in their flats in order to create a micro environment that will protect seeds from air currents and insulate the seeds to provide uniform germination temperatures. Potting mix aggregate Seed cover Hydroponic media Lightweight Inert Neutral pH Increase water retention Sterile