Hi Debbie,
Air movement is a key element needed for most epiphytes.
Often over looked, it will solve a lot of problems such as root rot,
freezing, spider mites and low humidity.
Most of them (epiphytes) are attached to trees that recieve lots of wind and
breeze,
allowing them to dry and keeping most nasties like fungus and bugs away.
Now I am not saying you need a wind tunnel, but there should not be any
stale air allowed for any length of time.
A simple fan will work at night, with more air movement during the day.
I'll get off my soapbox now.
thanks,
Michael

"Deborah F. Ryan" wrote in message
news
Could you be a little more specific with regards to air movement? We do
keep a fan going during the heat of July, but it never occurred to me
that
it would be necessary during the winter months. I'll surely keep in mind
to
keep things sterile. So far what damaged leaves that needed to be removed,
I
did by hand. Probably not a good thing, huh? Thanks for taking the time.
I
really appreciate it.
peace...
debbie

"michael exler" wrote in message
m...
I get the impression you have very little air movement in your
greenhouse?
This alone will give you lots of problems.
next would to better insulate the door.
As far as the plants the damage is done, just watch them close for signs
of
rot and remove it quickly so it does not spread to the rest of the
plant.
Remember to sterilize any tools and open cuts you make.
In particular Phal's will quickly show damage to leaves, so try to
protect
the crown from any spreading rot caused by freezing.
Michael

"Deborah F. Ryan" wrote in message
...
Folks, I've been reading through old posts hoping that I could find
the
answer (if there is one) to no avail. We only have about a dozen
orchids.
All in our little greenhouse which has managed to keep an average
internal
temp of 60*f (NW Indiana) and all on the same self-watering tray they
have
been on for several years. The only difference this year, was they
were
moved closer to the door. Obviously, a Really bad move on my part
Despite the temp being well above freezing, every pot froze solid to
the
mat
and the plants look just awful. They were immediately moved to the
highest
shelf (as close to the heating source as possible), but it's been
nearly
a
week and they aren't looking any better. At this point, would
bringing
them
indoors Really do them in, or just leave them were they are? Talk
about
feeling sick...
Thanks in advance!
peace...debbie