I don't have extra space, life is too short, and there are too many excellent daylilies out there that LOVE this climate to try to grow those that limp along and aren't happy here. If a highly desirable plant isn't performing well, I'll likely move it to a better spot after the second year if there is a remote chance the problem is the garden spot. Then it would get a max of two more years to show its stuff . After growing daylilies for many years, I'm much more ruthless in culling non- performers. it was harder at first!!