I believe what you're thinking of is diatomite, which is crushed pieces of calcined muds of freshwater diatoms. Essentially all of the world's supply comes from an Australian producer - Maidenwell - and it is imported as diatomite by diatomiteusa.com on the east coast, and Dyna-Rok II by Dyna Gro on the west coast.
Ray Barkalow - First Rays Orchids - www.firstrays.com Plants, Supplies. Books, Artwork, and lots of Free Info! ----- Original Message ----- From: "BevTall" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Thursday, July 19, 2007 3:57 PM Subject: [OGD] Diatomaceous Earth as orchid growing medium > Hi > The potting medium you are thinking of is a rock made out of DE which > is produced by Dyna Grow. One of the distributors is Fred Clarke of > Sunset Valley Orchids in California. I use it along with bark and > like the results. > Bev > > > > _______________________________________________ > the OrchidGuide Digest (OGD) > [email protected] > http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com _______________________________________________ the OrchidGuide Digest (OGD) [email protected] http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
