In which solar term do peonies usually bloom?

Before and after Grain Rain, peony flowers were in full bloom, and peony was warm in bloom in spring. Peony blooms around Grain Rain every year, and its plants are perennial deciduous shrubs, which are one of the rare woody flowers unique to China. The natural flowering period of peony is from April to May every year, and the specific flowering time is slightly different due to the different climatic environment in different regions.