What is Coir pith? Or “Coco-Peat”?

Coir is the outside hard layer of husk that surrounds the shell of the coconut. It consists mainly of fibres, which have traditionally been used to manufacture rope, carpets, doormats, upholstery stuffing, brushes etc. Between these fibres is the corky substance called coir pith, which has recently been widely recognised as the superior growing medium in which to grow soft fruit, tomatoes, roses and many other crops. The horticulture industry often calls this substrate coco-peat (or cocopeat) or coir-peat. Sometimes it is known by similar sounding brand names.