I have used it in my soil this year (roughly 1/3 of the total mix, along with 1/3 fish tank gravel and 1/3 clay kitty litter) and it has worked well. I got mine at wally world, but it was mostly bark and bits of charcoal. That mix you found sounds like it would be great just by itself. Let's see if some other members agree
I've never used it,but it sounds like an alternative.I've seen it and been tempted to try it.The vermiculite concerns me because it may hold too much water.I think if I were to use it I would sift the smaller particles out(if there are any).
Ever heard of a blender? It does wonders on size reduction. I use Sequoia bark (obtained from the Orchid Society) and orchid mix as my organic compoment. A cheap blender (capable of chopping ice) does a wondeful job in rendering "bonsai" size.
Yes, I've heard of a blender, but I prefer to use mine for daquris and the like. I think in his post, Zappa, was asking about using it "neat", hence my reply. Anyway, I guess you could use a blender or food processor to chop up bark, if you like.