Deer can develop a taste for orchids but usually will concentrate on the blossoms first. At this time in your area, you will probably have the blooming ones in the house due to freezing weather. Otherwise, you will have to find a way to protect them.
I have a problem with them from time to time and fence off the orchid area. I also have heard that if you get bars of Ivory soap, cut it into six pieces and put each piece in a little mesh tie bag used for rice at weddings, this will work. Hang them around the orchids. It has worked so far for me this year, but then the deer are also still working on acorns. My rose growing friends in Oregon swear by this method, but deer can change their habits, as we all know.
Cym Ladye