You have to wait even longer than I do for blooms. They are lovely. My peonies just finished blooming and are in their pots to move! My big one broke a bit while I was digging it out. Two very excited friends got starter pink peonies for their gardens.
I like the Harrison Yellow. Does it have problems with blackspot?
My Austin yelllows are very vulnerable to blackspot. Julia Child is less vulnerable, but still needs spray and systemic to have nice leaves.