It's a marketing thing. In the commercial nursery setting, plastic is the
only economical choice, but customers tend to prefer clay. So some folks
just set their plastic pots into clay when the plants come into bloom.
--
Kenni Judd
Juno Beach Orchids
http://www.jborchids.com

"boothbay" wrote in message
...
This is my first orchid in the Dendrobium family. I noticed that it was
sort of dry, so i took it out of the 4" pot. To my surprise, within that
clay pot, was another plastic pot with drainage holes. Why were they
planted that way? Does it make any difference?