Corey,
I live in northeastern Indiana, almost inside the corner created by Indiana, Michigan, and Ohio.
I planted Thin Man in 2007, did not know about leaf habit, did not worry, and every summer it blooms.
Sometimes ignorance is bliss.
Now that I have a lot more knowledge, I worry. This summer I have potted almost all newly purchase daylilies, and they will winter in a cold greenhouse where the temperature will not go any lower than 42 degrees. Next spring they all will go in the ground.
Gerry