Growing conditions
Joyce Miller (Wed, 26 Jul 2006 18:15:25 PDT)

I got some construction Perlite one time for $11a bag. It was medium
size and perfect to mix with Medium bark for orchid media. As a
safety precaution, it was always pre wetted to avoid the fluoride.
http://www.pacificbulbsociety.org/list.php

Joyce E. Miller
Sacramento, California, USA
USDA Zone 6 Gresham Oregon, just east of Portland Oregon in the
Willamette Valley