Its so reassuring to have all this great advice; thanks!
I'm so used to losing half my garden over the extremes of summer heat and winter cooling, that I still must be underestimating the easier care of daylilies ... they have amazed me over and over again this summer, and I can see now that they'll likely do so again this winter
You've given me the confidence to try splitting them up, some in the flowerbed, some in pots, just based on what I want to have in the garden or on the porch.