I planted my new daylilies last Fall in pots and your solution is what I should have done with them. I did plant some of them directly into my raised metal garden beds; the majority of those survived Winter. I placed the potted plants against a stone wall of my house in a protected area, surrounded by bales of pine straw, kept them watered, etc. Those have not fared as well. Lesson learned. I had intended to put all the pots into the metal garden beds and was talked out of that idea. Had I done so, with soil all around them, I suspect most would have survived.
