Peony seedlings typically take 5-7 years to bloom, but the exact time varies depending on the variety and environment.
Peony Seedling Growth Cycle
Juvenile Stage (1-3 Years): During this stage, growth is relatively slow, focusing primarily on root development, with limited above-ground growth. In the first year, there may be only a few leaves, and the height may not exceed 10 cm.
Growing Stage (After 3 Years): After 3 years, the peony's growth and development gradually accelerates, with noticeable growth of the above-ground part, increased branches, and larger leaves.
Peony Flowering Time
Most varieties typically take 5-7 years to reach morphological maturity, though some varieties may require even longer to complete internal physiological changes. Therefore, most peony varieties enter their normal flowering period between the sixth and eighth year after planting.
Special Varieties: Some special varieties or those grown in unfavorable environments may take up to 10 years or longer to bloom. Management Factors: Good management practices, such as appropriate fertilization, timely transplanting, and pest and disease control, can promote peony growth and sometimes even slightly advance flowering.

Special Situations
Transplanting Peonies: Peony seedlings three years or older, if transplanted in autumn and managed properly, may flower the same year. However, transplanting two-year-old seedlings may require a year to bloom.
Field Planting: Field-planted peony seedlings may flower the following year. However, to ensure healthy growth, growers generally do not allow them to flower freely, conserving nutrients for further growth.