Ursula, they sell the coir in every size from seedling mix to landscape chunks. The stuff I use for orchids is about 1/2" pieces. I'm finding some of the "orchid mixs" are now using it in place of fir bark. It does seem to break down slower than bark. The compressed bales or bricks are much lighter, and easier to store, than bark. Also cheaper to ship. It does seem to dry faster than the bark. My larger Dens are in baskets of straight coir, and loving it. The only down side is that it won't support the top heavy plants on it's own, so I'm experimenting with adding Aliflor for the weight.
