Hydroponics Online Hydroponic Blog

Coconut coir fibers are found between the husk and the outer shell of a coconut. The single fibers are narrow and hollow with thick walls. They are pale when immature but later become hardened and yellowed as a layer of lignin is deposited on their walls.

A couple of our forum members are using the Coconut coir as growing medium for their hydroponic setups.  The coirs are shredded, washed and dried and then packed lightly together to form the growing medium.  Since pH can be affected, one member is supplementing with rice hulls and course sand to balance things out.  Read more about this on our forums: Coconut Coir as growing medium