Nick, I'll look for this product. Something relatively new is being promoted in Texas to condition hardened flower beds - it's expanded shale, resembling small grey beads and may be inert. Cynthia W Mueller > On Oct 27, 2015, at 10:13 AM, Nicholas plummer <nickplummer@gmail.com> wrote: > > Hi Cynthia, > > Permatill is one of the trade name for stalite, an expanded slate product. > It's also sold as vole-bloc. Like perlite, it is inert and porous, but it > does not float. It's a nice neutral grey, and the particle size is fairly > uniform, pea sized or smaller. > > I don't have easy access to pumice, but I would image in that permatill > would work in most of the same applications. I use in mixes and also as a > top dressing. > > Nick > > On Tue, Oct 27, 2015 at 8:34 AM, Cynthia Mueller <cynthiasbulbs@hotmail.com> > wrote: > >> Nick, could you describe 'permatill' for us? I know the term but not the >> actual composition. >> >> Cynthia W Mueller >> >> > _______________________________________________ > pbs mailing list > pbs@lists.ibiblio.org > http://pacificbulbsociety.org/list.php > http://pacificbulbsociety.org/pbswiki/