Derived from coconut husks, carbon-rich Eco-co® Coir is handy for layering with nitrogen-rich kitchen scraps and lawn clippings in the compost pile, and it makes a good bedding material for worm composters. Our exclusive Eco-co® Coir is also an earth-friendly planting mix for use in pots, planters and window boxes, or as a peat-free alternative when you make your own planting mixes. Unlike other coirs, our Eco-co Coir undergoes a special process to remove salts and to balance the pH for optimal plant growth. Eco-co Coir has excellent water-holding capacity yet drains well — so important for healthy root growth. Our blend is a mix of fine and coarse grinds to provide the perfect environment for plant roots. Simply add water and each convenient compressed brick expands to 10 quarts of fluffy mix.