Rose of Sharon Seedlings: Blooming Takes 3–4 Years

Rose of Sharon (Hibiscus syriacus) grown from seed often takes 3–4 years to reach flowering maturity, especially at the northern edge of its range (Oakville, Ontario). Your 3‑year‑old seedlings are healthy but not yet mature. Expect blooms next year.

Tip

Don't over‑fertilize with nitrogen; it delays flowering. A light application of balanced fertilizer in spring is plenty.