Abstract The essential oil of Artemisia verlotiorum Lamotte growing in Auvergne (France) was investigated by GC and GC/MS. Eleven batches of the plant were harvested in various areas, at different vegetative periods, and essential oils isolated from aerial parts by steam distillation. Fifty components amounting to ca. 90% of the oil were identified, the major being Î±-thujone (40.7% av.). The other significant constituents were 1,8-cineole (9.58%), (Î²-thujone (6.70%), Î²-caryophyllene (9.34%), germacrene D (4.23%) and caryophyllene oxide.