Peonies have different bloom times in the spring depending on the variety. In Calfornia, dependant on the early spring/late winter weather, our bloom season begins the later part of April to very early June. If you are planting in hot spring/summer areas, the best varieties to grow would be our early to midseason varieties as the late season varieties may not open well if the temperatures are too hot.
Peonies Listed by Bloom Time
Early Season Varieties: