Sand, the playground kind, thats what fred said he uses. Fred has posted, and Im sure will now, what he mixes in with it. This will be only my second year with the sand/fines, so Im still working on that part. Last year, I used some black cow I had, not sure thats the best, but it didnt burn anything. I threw in plantone. That stuff is expensive, so Im looking to mix my own bit of something this year. When I dumped my floyd cove pots, there was sand and pine bark, so It seems to be a pretty good standard. I find the key with this sand/fine thing tho is, you must keep up with the feeding. While draining water, it drains nutrients as well. Ive found you cant really over fertilize, if you use, say MG on a hose end sprayer. Im more careful with the granular stuff. Milorganite twice a year.
James.....what did you mix in your fines???