Coco peat (cocopeat), also known as coir pith, coir fibre pith, coir dust, or simply coir, is made from coconut husks, which are byproducts of other industries that use coconuts. Coir waste from coir fibre industries is washed, heat-treated, screened and graded before being processed into coco peat products of various granularity and denseness, which are then used for horticultural and agricultural applications and as industrial absorbent. Usually shipped in the form of compressed bales, briquettes, slabs or discs, the end user usually expands and aerates the compressed coco peat by the addition of water. A single kilogram of coco peat will expand to 15 litres of moist coco peat.
Coco peat is not fully decomposed when it arrives and will use up available nitrogen as it does so (known as drawdown), competing with the plant if there is not enough. Poorly sourced coco peat can have excess salts in it and needs washing (check electrical conductivity of run-off water, flush if high). It has a similar cation exchange capacity to sphagnum peat, holds water well, re-wets well from dry and holds around 1000 times more air than soil.
Coco peat is also used as a bedding in animal farms and pet houses to absorb animal waste so the farm is kept clean and dry. Coco peat is hydrophilic unlike sphagnum moss and can quickly reabsorb water even when completely dry. Coco peat is porous and cannot be overwatered easily.
