Is there a chance you'll have peonies in late June?
The herbaceous peony collection is recorded to be in bloom in early May to late May, but not recorded to bloom in late June. Also, the Tree Peony collection blooms in late April to early May, coming into bloom before the herbaceous peonies. I hope this helps.
Also visit our libguides page for recorded dates for other flowering plants at NYBG.
Courtesy of the NYBG Plant Information Service