Coconut fiber briquettes, also known as coir blocks, are compacted bricks made from the fibrous husk of the coconut. These eco-friendly blocks are widely used in gardening, hydroponics, and landscaping thanks to their excellent water retention, drainage, and aeration properties.
When immersed in water, coconut fiber briquettes expand significantly (up to seven times their original size), creating a lightweight, porous substrate that promotes healthy root growth.