The concentration of heavy metals, such as lead, naturally present in the environment, has been gradually increasing with the development of industrialization. Aromatic and medicinal plants have a demonstrated ability to accumulate heavy metals, being thus a good choice for phytoremediation, since they are mainly grown for their secondary products (volatile oils). The aim of this study is to investigate the tolerance of lead (the critical concentration of lead in the soil being 100mg/l) in Hyssopus officinalis L. using seed germination and seedling growth bioassays. In the investigated species, seed germination and seedling development were affected by the tested concentrations of lead solutions (100 mg/l, 300 mg/l and 500 mg/l). The tested lead solutions influenced the seedling root and hypocotyl elongation in Hyssopus officinalis as compared to control.