Corylus colurna

Corylus colurna (Turkish hazel or Turkish filbert) is a deciduous tree native to southeast Europe and southwest Asia, from the Balkans through northern Turkey to northern Iran. It is the largest species of hazel, reaching 25 m (82 ft) tall, with a stout trunk up to 1.5 m (4 ft 11 in) in diameter; the crown is slender and conical in young trees, becoming broader with age. The bark is pale grey-buff, with a thick, corky texture. The leaves are deciduous, rounded, 6–15 cm long and 5–13 cm across, softly hairy on both surfaces, and with a coarsely double-serrate to shallowly lobed margin. The main limbs are quite small in diameter in relationship to the straight trunk, and arise at almost a 90-degree angle. Making the tree quite durable to urban conditions and helps maintain a symmetrical crown which landscape architects love so much. Corylus colurna has a medium growth rate. Corylus colurna is occasionally drought tolerant and alkaline soil tolerant. However, it prefers moist, well-drained soil, as well as full sun. Once established Corylus colurna is tolerant of heat, cold, and drought. There are no serious pests or problems with Corylus colurna. Corylus colurna is not easily transplantable, and will need extra watering in summer after transplanting. It will take about two years after transplant for the tree to become establish and survive on its own.