Yes it is a old thread that someone brought back to life.
I have to tell myself sometime that I am going to buy myself out of a home and end up sleeping in a dog house drinking rain water. It is addicting. I use to have space stop me now that I have all these acres of land there is nothing to stop me.
I am pretty sure peony. Sarah Bernhardt is hardy to your zone. It is a historic peony. If you see a house that has fallen down years ago and see a peony growing and flowering it is a pretty sure bet it is Sarah.