Peonies: squashed tree peony, 3 by Pistil

Pistil wrote:
Thank you all for your suggestions (I never called Mr. Rogers as I did not buy it from him). I did see on the website they like wind protection-seems to be true. I may have to move it-but where?
Now what?
Tree Peony Hesperus did not want her flattened woody stems to be pulled upright and staked, they did not seem to have enough elasticity for this, so I let her stay the way the wind left her. All stems survived and grew-the only one left standing grew over 2 feet! But she looks like a palm tree! Now the leaves are falling, and I think maybe I should prune her to the ground??? Now or in the spring?