If you have been wanting to try rooting your cuttings in coconut coir, you might want to get some Burpee's Eco-Friendly Seed Starting Mix. It's 95% coconut fiber and 5% Perlite with a small amount of organic fertilizer. I bought a couple of 10-qt bags today (for $3.59 each) at K-Mart. The color and coarseness of the mix reminds me of coffee grounds--except it's really light and airy--and I can see why it would promote aeration of the roots. I used the mix to cup up a few cuttings tonight and I'm hoping to be able to post a positive review in a few weeks.