My tree peonies started blooming around 4/17 and lasted to around 4/28. Rockii tree peony around 4/30 and Shishifukujin?? around 5/6. My itohs started around 5/6 and lasted into the middle of May, and my herbaceous started around the middle of May until June. This year the plants are about 1 to 2 weeks behind last year.
