Coir comes from the world’s largest seed, a coconut! This massive drupe has three distinct layers – pulp, shell, and husk. The pulp is the primary reason coconuts are grown. After being harvested for food products like coconut water and mars bars, both the shell and husk are sent to either be turned into fiber like burlaps sacks and rope or they can be used as an agricultural input. As a grow media it is considered an alternative to peat moss. (Click here for a great article on why you should not be growing in peat moss.) Coir is considered more sustainable than peat moss, but it is also much better for cannabis production. Although coconut husk contains salts when harvested from the palm, it can be flushed much easier than peat. After a thorough washing (always ask for at least triple rinsed coir from your hydro store) the coir is now ready for salt based fertilizers, where peat moss builds up salts immediately. Coir allows for growers to give heavier feeds without the fear of locking up the soil with sodium or other nutrients. Coir also has the ability to hold 8 times its own weight in water while staying extremely drainable. It can also be buffered with calcium nitrate to become almost completely inert. At that point, the grower gets complete control of this soilless substrate. You can start feeding immediately with both synthetic and organic liquid fertilizers. It can also be used as a base for many various soils or soilless medias.
Coconut and cannabis are tied together at the roots. Give your plants some coconut and see how they thank you!