Fresh seeds of certain annual legumes such as Trifolium scabrum, T. campestre, T. angustifolium, Medicago minima, M. disciformis, Onobrychis aequindentata and O. caput-galli were collected every month from July to November as well as in March and April of the growing period 1997-1998. The seeds were induced to germination and the germination percentages were recorded. The results showed that all species, except Onobrychis aequindentata, did not germinate during summer. Germination percentages were low in the autumn and peaked in different month for each species, possibly owing to different autumn temperatures; spring germination was very low or non-existent. The effect of precipitation was possibly critical for the release of hardseededness, but new research is needed to verify its role.