Add to Cart Compare Quick view Vermiculite 3.5 Cubic Foot Bag MSRP: Now: $34.99 Was: Vermiculite is mica heated to 1,400 degrees, expanding it into particles capable of holding much air, water and nutrients. The mineral itself contains potassium, magnesium and calcium available in... MSRP: Now: $34.99 Was: Add to Cart Compare Quick view Qty in Cart: 0 Quantity: Decrease Quantity: Increase Quantity: Price: MSRP: Now: $34.99 Was: Subtotal: Add to Cart