Lee, A local feed store is one of the best and cheapest places get Dry-stall. A 40lb bag starts at $10 and gets more expensive as you get further away from one of the main pumice mines in southern CA. Here in the Bay Area, I can get a bag for about $20. You can fill a number of pots with a 40lb bag. If you live on the West Coast and have access to pumice, I don't see why you would use anything else, other than trying to keep your pots light, as Jane said. Unlike other media, pumice will never break down. If it gets mucky after several decades of planting, just wash off the detritus and soak the pumice, sterilize if you can, and you can use it as new. I don't swear by too many things but pumice is one of those things that I do swear by. The bulbs love it. Nhu On Thu, Jul 12, 2012 at 10:59 AM, Lee Poulsen <wpoulsen@pacbell.net> wrote: > Drystall is just very small pumice; I use it in my seed starting mixes. > But last time I went to get a bag from our local cactus/succulent nursery, > they said it isn't available any more. Anyone know what happened? >