The study was carried out to estimate effects of growth (age and diameter at breast height) and geographic (aspect and altitude) characteristics on content and two major constituents (alpha-pinene and (beta-pinene) of essential oil obtained from seeds of three Taurus cedar (Cedrus libani A. Rich.) populations sampled from Isparta district at Southern part of Turkey. Besides, content and constituents of essential oil were compared for altitude, aspect, age and diameter at breast height classes.