Black Gold Vermiculite, 2 lb. is a naturally occurring mineral known for its exceptional absorbency and lightweight properties, making it an essential component in many professional soil-less growing mixes. It excellent Cation Exchange Capacity (CEC), which enhances fertilizer retention and release, promoting healthier plant growth when used in potting mixes. This vermiculite is also for rooting cuttings when used on its own. by the Organic Materials Review Institute (OMRI), it ensures quality and suitability for organic gardening. The product comes in a convenient, ready-to-use 2 lb. pour bag, making it easy to handle and apply.