Glen - Thanks for those cultivar names. I see the same thing as you with some of my "dormant" seedlings struggling year after year. Glad to know you do have some that are doing quite well every year and increasing.
Maurice - I do believe you and Sue are possibly correct about the heat more than the lack of long, cold winters causing issues with dormant daylilies. I do have some raised beds in partial shade. I may take your advice and plant the dormants in those beds to see if that helps them survive our hot summers. I have only 1 Munson cultivar (Emperor Butterfly) so far, which is an evergreen not a dormant. I do like his watermark daylilies. I've been looking at Hansen's daylilies, too.
Stan - Wow! Impressive list. Please do continue to tell us how they do each year. Being in the panhandle, you are in a zone cooler than me. That may help your dormants, too. I am sure you stay colder longer in Winter than I do.
Thanks for the cultivar names!