wrote:
uncle cecil on vermiculite:

http://www.washingtoncitypaper.com/display.php?id=35503

--j_a
I quit using the medium my plants liked the most years back due to
health concerns; rockwool. The plants LOVED it but with the number of
polants I had, I was speiding three solid weeks repotting and could
hardly breathe after a day of it even WITH a dust mask.