Coco coir.
A horticultural material processed from coconut husks and sold in forms such as pith, fibers, and chips.
What it means for your plants
Read preparation instructions and check whether the product has been washed or buffered. Fine coir and coarse chips behave differently. A raw ingredient is not automatically a complete potting mix.
IN PRACTICE
A compressed coir block needs hydration according to its instructions before it can be evenly incorporated into a blend.
Put it into practice
Learn how coconut coir and peat behave in potting mixes, what to check on labels, and how to avoid overly wet root zones.
Coco coir vs. peat: understanding moisture-retaining ingredients