QuestionWould you tell me the best time and how to propagate a tree peony?
AnswerHi Hyun,
Thanx for your question. I had two tree peonies in my life and both are now dead, so, I haven't had much luck with them. Here is a link that will tell you everything you need to know about propagating tree peonies. I hope this helps.
Tom
http://www.xinxinpeony.com/xinxin/propagation.htm