Hi Chelle,
I have always been told that the leaves should be cut down to about a foot or even a little less, so the plant will send the energy to the roots instead of trying to keep the leaves going. I always thought that you wanted the roots to develop and take hold when moving things especially in the fall. Now that said, we are suppose to leave the leaves intact on tulips and lilies so that sends energy to the bulbs for next year.
I guess I have no idea, lol, which is correct!!!!