Rhodomyrtus tomentosa is a valuable plant for medical and pharmaceutical uses. The plant reproduces through seeds; however, the seeds become dormant, resulting in low germination rates. The industrial demand for this plant is expanding, making sustainable propagation a major challenge. The present study aims to evaluate different techniques for breaking the dormancy of R. tomentosa seeds. A randomized design was used to evaluate different techniques for breaking the dormancy of R. tomentosa seeds, including de-operculum, chemical scarifications, and exogenous gibberellic acid (GA3), in both laboratory conditions at ambient temperature (25 ± 2 °C) and field conditions. The characteristics of R. tomentosa fruit and seeds were assessed. The average mass, width, and length of fruits were 1.90g, 13.78g, and 15.27g, respectively. The average seed/ripe fruit contained 57 seeds, and the mass of 1,000 seeds was 2.64g. Seed viability (100%) was achieved in the treatment with 0.075% tetrazolium at 45 °C for 3h, but a germinated seed was only 13.00%. The study of breaking seed dormancy in laboratory conditions revealed that de-operculum significantly enhanced seed germination up to 83.00% within 15 days, compared with control treatment of 13.00% within 34 days (p ≤ 0.01). In contrast, 10% KNO3 for 24h under field conditions resulted in the highest seed germination rate of 91.00% within 34 days, while de-operculum treatment showed 63.00% of seed germination within 15 days. In addition, the seed water imbibition rate between control and de-operculum seeds was evaluated. The results demonstrated that the control seeds absorbed water more slowly than the de-operculum seeds, indicating that de-operculum promoted faster germination. The findings concluded that breaking seed dormancy is important for R. tomentosa seed germination. De-operculum and KNO3 were discovered to be effective ways of breaking seed dormancy in R. tomentosa.