Liz,
Thank you so much for the additional detailed and helpful information. I am just beginning to think about them (learning phase but not buying phase) and value the information you provided.
Karen,
Thank you too for the detailed information. Yes, I am a regular customer at Ken's Gardens and will certainly look for the tree peonies in the spring of 2016, especially the orange one that might be Kinkaku. That one sounds like an excellent starting point.