Of the two varieties of Coir 'peat substitute' I have seen, one was
quite fibrous, while the other was darker, fine grained, and
looked a lot more like peat. I guess it depends how finely they
grind up the coconut shells, or whatever they do with them. We
also see bags of cocoa shells (the stuff chocolate is made from)
as a soil additive, or a top-dressing for gardens.
Unfortunately, these supposedly waste products tend to cost more
than peat, which is a bit of a disincentive. SOrry this is
getting off the CP track, but someone did say they were growing
CP in Coir.
-- Clarke Brunt (clarke@brunt.demon.co.uk)