Coco coir is a natural growing medium made from the fibrous husk of coconut shells. It is used as a soil substitute and hydroponic substrate, prized for its excellent water retention, aeration, and natural resistance to pests and pathogens. It is a renewable byproduct of the coconut industry.
Key Facts
- Holds 8β10 times its weight in water while maintaining good air porosity
- Slightly acidic pH (5.5β6.5) β compatible with hydroponic nutrient solutions
- Contains natural trichoderma fungi that suppress root pathogens
- Available as loose coir, compressed bricks, and blended with perlite
- Requires buffering with a calcium-magnesium solution before first use (coir binds Ca and Mg)
- Sustainable and renewable β a byproduct of coconut processing