I actually got a bit worried about several that I planted fairly early last fall. We had a bit of colder weather then it warmed up again for around a month. I had significant growth on around 5 or 6 new peonies before it finally got cold again and they died back. All of them survived the winter and grew this spring, I don't think any flowered, though, but neither did a significant number of the newer ones.
You'd think that if you planted them late enough that you don't get stems growing but well before the ground freezes it'd have to give them a better chance of settling in well overwinter.
I added the photo in edit after I finished my first post so yes, it'll let you. Think it's a good idea to edit the root pics with flower pics, will probably have to manually put in the date, though.