Coco coir is a growing medium produced from the husks of coconuts. Previously considered a waste product, the world has now awoken to the boundless possibilities these husks provide. Coco coir in all its forms is a great transition from peat-based composts. Coco coir has aeration & water rentention benefits. Nutrients will need to be added to your coir as there are no natural nurtients in the coir.