Coir Pith: An eco-friendly growing medim

Saturday, September 02, 2006

Coir Pith: a proven alternative to rockwool slabs, peatmoss and perlite

Coir Pith also known as cocopeat or Coir dust consists of short fibres. The honeycomb like structure of the mesocarp tissue gives Coir Pith a high surface area per unit volume. This property enables Coir dust to absorb liquids and gases.

Coir dust is air dried and compressed into blocks or bales. Before it can be used, The Coir Pith blocks or bales are to be placed in a tub of water which causes the coir dust to expand. A standard bale generally yields around 340L of moist coir or approximately one third of a m3.

The most important attributes of coir dust is it’s ease of wetting. Unlike
peat which becomes increasingly difficult to rewet as it dries down, coir dust remains relatively hydrophilic even when it is dry. This property of coir pith impacts provides water and fertilizer use efficiency.

Many supermarket shelves with Coir Pith shows that coir dust is now commonly used in potting mixes especially those that claim to be water efficient.