It's funny to find this thread, as it what I've been asking myself. Now...first things first...I must admit that, from necessity, almost all of my daylilies are in pots.
I lost 9 (maybe 8?) over the winter, and quite a few others dwindled to one fan, some from full clumps. One that's still hanging on there with one fan is Indian Giver, noted above. The others include Prairie Blue Eyes (gone), Arnold's Daughter (gone), Druid's Chant (gone), Mauna Loa (gone, I think), Star Over Oz (gone), and Tigger (gone).
Chamonix was one that seemed gone, but then I dumped the pot out. In a 3 gal pot, I'd planted two smallish size plants: Chamonix and Ida's Magic. The pot, watered a couple of days ago, was bone dry today. It was also FULL of Ida's Magic roots. Two Chamonix plants were still in there, barely, without much crown and just a few roots. They've been liberated and repotted on their own, and dear Ida now has her own, much larger pot.
This all surprised me, as I figured my losses were due to rot during our warm, wet non-winter. Now I think the losses all just dried out and croaked. That said, several were in their own pots, while others were in pots with companions like Ida's Magic that did just fine, even increased significantly.
My takeaway? I need to get my daylilies into the ground by early fall, somehow. Either that, or I need to switch back to straight potting soil from a soil/soil conditioner mix, or use more soil in the mix.
I'm curious to see if the two tiny almost-gone Chamonix plants pull through! It's a beauty, and the one I'm most bummed about, after Mauna Loa.