The reason I check parents is that my garden is between 2 bodies of water--the Atlantic Ocean and the Intercoastal Waterway. Temperatures in my garden are kept moderate because of the water. We are warmer in the winter and cooler in the summer. Evergreen daylilies are much more likely to grow in this location than a daylily with a dormancy in it's background. Yes, days get short but they may never get below 40 degrees. Often it never gets below 40 degrees. I have a very specific environment that is very good for evergreen daylilies!