I grow Wineberry Candy in zone 10b (southern California) and it is doing okay. I checked my notes from this past winter and there is nothing noted so it must go dormant here in the winter (I only take notes if there is a difference between registered data and my actual experience). I did note, however, that it is an EE rather than EM in my garden and I did post a picture of it blooming in the database. The only other thing I can add is that it increased from 3 to 8 fans last year - great considering that the original fans were very small, nasty, dried out 2-3" hulls to start with (purchased them before I started purchasing dl's through hybridizers and dl gardens). I expect that it will increase quicker this year.
About 30-40% of the dl's I grow are dormants (I can get a more accurate number if that is helpful). In fact, my best increaser last year was a dormant (but so was the worst increaser which had 0 increase). I have read that dormants don't like the warmer zones but that has not been my personal experience. In my garden, the cultivar seems more important rather than the foliage habit so I don't give much thought about foliage habit when purchasing.
As a reference point, my climate is very dry (less than 7" of rain last year - norm is 12-13") and hot in the summer. Last year, we had 2-3 weeks of 115+ degrees during the day and 85-90 degree nights so my daylilies need to be tough.
