Fagus orientalis tree's natural range extends from southeastern Bulgaria's Strandja mountain, through northwest Turkey, and east to the Caucasus Mountains in Georgia and Russia, to the Alborz Mountains in Iran. Its habitat is restricted to mountain forests, at of altitude. The Oriental beech has colonized even lower altitudes in the Strandja mountain of Bulgaria as low as above sea-level, due to the unique local micro-climate, where it forms typical "Fagus orientalis"−"Rhododendron ponticum" forests as well as with other evergreen shrubs. The wood of "Fagus orientalis" is heavy, hard, strong and highly resistant to shock. These features makes it suitable for steam bending.
Parornix fagivora continues living freely under a folded leaf margin or leaf tip. Parornix fagivora Parornix fagivora is a moth of the Gracillariidae family. It is found from Sweden to the Pyrenees, Italy and Albania and from Great Britain to southern Russia. The wingspan is 11–14 mm. The larvae feed on "Fagus sylvatica", including subspecies "Fagus sylvatica orientalis". They mine the leaves of their host plant. The mine starts as a small lower-surface epidermal corridor with reddish brown frass. Later, it becomes a small rectangular full depth blotch with black frass. The larva deposits only little silk in the mine, that remains