Abstract: Hibiscus hamabo (H. hamabo) , characterized by its dense canopy and large flowers, holds significant ornamental value and strong ecological stress resistance. However, the hard seed coat of H. hamabo results in low germination rates, thereby limiting its application in landscaping. In this study, the effects of varying temperatures, light and pretreatment methods on the seed germination of H. hamabo were explored. The results showed that the optimal temperature for the seed germination of H. hamabo was 25 ℃, with both low or high temperatures inhibiting seed germination. Light was not a necessary condition for the seed germination of H. hamabo, which can still germinate under continuous dark conditions. Pretreatments such as acid treatment, acid plus hormone treatment, and hot water bath could promote the seed germination of H. hamabo, among which acid treatment had the best effect, yielding germination rates, germination potential, and germination index of 98.89%, 91.11%, and 48.89, respectively.