Myrica gale L. leaves were collected from two plantations in Poland and flowers from one plantation. Essential oil yield replicas de relojes españa and composition were assessed according to plantation site and leaf development stage. Main components of essential oils were: 1,8-cineole, α-pinene, limonene, selina-3(7)-diene, and (E)-nerolidol. It is proven that senescent leaves are valuable source of essential oil.