Peonies bloom in late spring to early summer, typically from May through June, with the exact timing depending on your climate and location.
The bloom season can vary by several weeks between northern and southern regions. Here are the key points about when peonies bloom and for how long:
Bloom Time by Peony Type Tree peonies (Paeonia suffruticosa) are the first to bloom, opening their flowers around early to mid-May.
Herbaceous peonies (Paeonia lactiflora) bloom next, with a wide range of cultivars opening from mid-May through mid-June.
Bloom Time by Cultivar Within the herbaceous peony group, you can extend the bloom season by selecting early, mid, and late season cultivars:
Early May to Mid-May: 'Coral Charm', 'Wonderous Delight', 'Red Charm', 'Early Bird' Mid-May to June: 'Festiva Maxima', 'Etched Salmon', 'Walter Mains', 'Sarah Bernhardt' Mid-June to Early July: 'Kansas', 'Candy Stripe', 'Garden Treasure'
Individual peony plants typically bloom for 7-10 days. However, by planting a variety of types and cultivars, you can potentially enjoy peonies blooming for up to 6 weeks in your garden.