Hummingbird and Butterfly Gardening: DAILY BUTTERFLIES Page 58, 1 by Sheila_FW

Sheila_FW wrote:
As for the GFs Martha, They are real cold hardy. I still had cats on my PW tho only a couple, and they were alive after the thaw. I have seen several GFs come through here when the temps get in the 50-60s. So I would release that one if it emerges, especially in your area. They will find some early weed blooms to feed on and be dormant in the cold weather.
One of my early heartbreaks was one I kept indoors because of the cold. I felt it was best at that time because a cold front was on the way. I gathered some flowers before the freeze got them (pic). It only lived for a week. I know now that they are real cold hardy and would have made it outside more than likely.