I don't know, I am reading all of this about any type of daylily can be grown in my garden but I just have not found that to be true in my 25 years of growing them. The most often lost daylilies in winter here are evergreens. Evergreens and some semi-evergreens are always most likely to get crown rot in my garden also. The evergreen Munsons struggled until they increased to a small clump and then they seemed to be a bit more hardy. I purchased a few evergreens from a Florida grower last year (single fans) and I lost them this past winter, despite the fact that they were planted in early spring. I also lost a 2 year old 4 fan clump of Archaelptyrx this winter, along with Raspberry Frost, Bella Isabella, Happy Happy (replaced that one) and Dragonfly Dawn is struggling. I can't recall ever losing a dormant to cold kill or crown rot. Also, some evergreens and semii-evergreens (not all) really struggle growing in my climate. I have some that I have had for 5 years that still have only 2 fans despite the fact that I fertilize with both slow release fertilizer and milorganite. I amend my clay soil with compost. My soil has never been ph tested so maybe I should consider doing that. I have taken some of my daylilies l80 miles north to my cottage in zone 4 and I find the same thing happening. Some do well and others just struggle to survive. That area has totally different soil consisting of a sandy loam type dirt and watered with strictly well water. I love the Reckamp/Klemn daylilies because they are dormant but most of them I find are not real good increasers. These are just some of my observations I thought I would add to the debate.
