Therm-O-Rock Super Coarse Horticultural Vermiculite - 4cu ft - Super Coarse - OMRI® Listed Mushroom Supplies Easy temperature control

Easy temperature control

and BLOOM base nutrients

fast-acting source of major nutrients

for a food source

Simply break them up and mix with our perfected Select Bulk casing mix in the new grow chamber provided

Therm-O-Rock Super Coarse Horticultural Vermiculite - 4cu ft - Super Coarse - OMRI® Listed Mushroom Supplies Easy temperature controlTherm O Rock Vermiculite is a soil additive that uses its accordion like particles to amend soil by retaining water, improving aeration and prolonging nutrient release. Its ability to retain both air and water makes vermiculite ideal for conditioning container soils. Vermiculite can also be used for seed germination, bulb storage and flower arranging. OMRI Listed.