Turkey Oak (also called Austrian Oak) is hardy but lacks the timber value and biodiversity of native Pedunculate and Sessile Oaks, and through no fault of its own harbours a serious pest that hampers their regeneration nearby. Introduced in 1735, it hybridises with Cork Oak in France and Italy to produce Lucombe Oak (Quercus × hispanica).

Native to southern Europe, including France, Austria, Switzerland and Italy, and the Balkans, including Turkey.

Monoecious. Wind-pollinated. Animal-dispersed.

Tall (40m), with a dense crown, conical then rounded, and slender branches swollen at the trunk. Bark ginger-brown, deeply furrowed between thick plates. Grey-hairy twigs carry whiskered buds clustered at the tips, giving a mop-like winter outline. Glossy oblong leaves (5-15cm) are lobed, often marcescent. Acorns (2-5cm), single or paired, sit in distinctive bristly, stalkless cupules.

Planting of this species should cease, to conserve native oak species.

Hosts the Knopper Gall Wasp (Andricus quercuscalicis), which alternates hosts over two generations: asexual females lay in Turkey Oak flowers, and the next generation lays on Pedunculate Oak acorns, forming the alien-looking knopper gall. This can severely limit native oaks' regeneration, so foresters view it unfavourably and often target it for removal.

Generally healthy.

Its timber is inferior to that of other European oaks, being less durable and without the same strength properties. Products include rough construction, including ‘railway sleepers’ for landscaping.