I imagine bloom times can differ with zones, but for the life of me, I cannot find any guide. What is classified as very early, early, mid, mid-late and late? I am new to peonies and would say that I have some blooming early (first bloom opened May 22nd), and others about a week later. The Festiva Maxima blooms first, but I swear I have another Festiva in a different spot in the yard (it gets a bit less sunlight than the first) and it blooms full about 2 weeks later.

If Festiva is an early bloomer, then how many days/weeks later could I expect a late bloomer to open? I know this may seem like a rudimentary question when it comes to peonies, but I really can't find anything on it. I would love to extend my peony blooms by getting some late blooming plants, but was hoping for some clarification from you experts. Thanks in advance.