I've read that even the Monarchs in Mexico are faced with freezing temps from time to time. The primary thing is for them not to get wet because ice crystals form in their wings. I'll think positive, although a few years ago I lost a Cloudless Sulphur due to the cold. It sucks, but it happens. In the meantime, my mom went on a search around the house and brought in all the Monarch caterpillars she could find so at least our population will continue.
