Just to throw another spanner into the works. When a daylily is classified as evergreen in GA or SC or NC. It's performance is not equal in my rather tropical location. I have 2 daylilies in my garden right now--one from north FL and one from southern GA and both as registered as evergreen. Here in my boxes both went to ground and their foliage shank to 2.5". They are thinking about growing now but nothing is happening. I'm not sure they will survive but they were cheap and I took a chance.