Liz - yes, I have herbaceous peonies as well as a few ITOHs. I have all of the old favorites such as Festiva maxima, red charm, coral charm, Sarah Bernhardt, etc. and they all bloom regularly. I am a lazy gardener and do not go to any extremes for any plant so no, I do not put ice cubes or anything like that on the peonies. I am lucky that my zone has just enough chill hours to allow me to grow them. We get maybe 14 days of below 32 degree nights. I'll post a list of my peonies if anyone is interested in what blooms in zone 9.
