Becky, when I lived in Marietta, GA most of my daylilies were dormant and they did very well. Now that I'm in 9b, it's a whole different world. This year we had one morning when the temps dropped to 36 for 1 hr. Rest of the time lows were in the low 40's. Dormants require cold hours and in this garden, there just isn't enough.
I have a friend who lives west of Gainesville. Her temps are significantly lower than mine. In the winter her garden routinely experiences 20's and some times it's in the teens. She can grow some dormants very well, but not all. She can't grow any of the tropicals that I can. It's surprising just how different one zone up is from one zone down. Very significant!
