Vermiculite 8 Qt

Use to provide increased CEC (cation exchange capacity) to soilless growing mixes. A naturally occurring mineral; vermiculite is highly absorbent; lightweight and an essential part of many professional soilless growing mixes. It has a high CEC (cation exchange capacity) for better fertilizer retention and release when used in potting mix. When used alone, it is good for rooting cuttings. OMRI Listed?.