The objective of this research was to evaluate the efficiency of methods to break hardseededness in seeds of white dover cv. Guaíba S1 (Trifolium repens L.), persian dover cv. Kyambro (Trifolium resupinatum L.) and one native ecotype of adesmia (Adesmia muricala (Jacq.) DC.). The following treatments were utilized: immersion in water at 60°C during five minutes; exposition to dry air at 50±5°C during six days; exposition to humid air at 5±2°C during six days; manual scarification with sandpaper number 40; and untreated seed. Each species consisted of one experiment with four replicates with 50 seeds per treatment, which were arranged in a complete randomized design. The seeds utilized were stored nine months at room temperature. The germination test was carried out over blotting paper, in Gerbox, at 20°C temperature. For adesmia, the temperature of 25°C was utilized. Both manual scarifying and immersion in hot water were effective in breaking the hardseededness of adesmia. Only the manual scarification with sandpaper was effective in removing the dormancy of persian dover. White dover was not benefited by scarification processes, however the immersion in hot water and the manual scarification were deleterious. The results allowed to conclude that seeds of adesmia and persian dover have to be scarified when a rapid establishment in the field is the objective, while for white dover no breaking treatment is necessary.