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Corylus colurna

Corylus colurna

Turkish hazel

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Description

Corylus colurna (Turkish hazel) is a large, deciduous tree with a broad ovate crown like a Tilia. Reaching to twenty to twenty five metres high with a width of ten to twelve metres on a single stem, and can become a characteristic multistem as well. Older trees get a more open and wider canopy. Naturally occurs in Eastern-Europe, Balkans, Asia Minor and Central-Asia and grows mostly in poor, dry, rocky woodlands together with Carpinus orientalis, Ostrya carpinifolia and Tilia tomentosa. Described by the Swedish botanist Carl Linneus in 1753.

The green and waxy leaves of Corylus colurna are obovate, with crenate serration on the margins, while the underside is covered with soft hairs and paler in colour. The leaves can turn beautiful butter yellow during autumn, eventually carpeting underneath the tree. The yellow male catkins are opening in late winter, which is such a welcome sight after the dark days of winter. The female flowers are small and insignificant, developing 4-6 nuts in a husk with long scales. The ornamental flaking, pale brown bark of the Turkish hazel is corky with some shallow fissures. The canopy is dense, providing habitat for wildlife, and of course also food for birds and squirrels during the autumn and pollen and nectar for insects.

The Turkish hazel is a valuable tree, suitable for hot and dry conditions in larger gardens and parks, and also used as a street tree. The street should be wide enough for the ultimate size of the crown however. It is enjoying lots of summer heat and being able to withstand very harsh conditions. It could take severe pruning and responding vigorously even from the base with long suckers, however the wood is brittle. The leaves are soft and easy to decompose. The wood is relatively soft, however the tree can reach a very mature age. Corylus colurna requires well-draining soils where waterlogging is not an issue.

Types of planting

Tree types

standard trees feathered trees multi-stemmed trees shade trees fruit trees woodland planting stock

Use

Location

street avenue square park central reservation large garden cemetery traffic areas, industrial zones countryside

Pavement

none none open open sealed sealed

Planting concepts

landscape planting prairie planting

Characteristics

Crown shape

wide egg-shaped wide egg-shaped

Crown structure

semi-open semi-open

Height

20 - 25 m

Width

10 - 12 m

Winter hardiness zone

5B - 9A

Aspects

Wind

tolerant to wind

Soil

loess sabulous clay light clay sand loamy soil

Nutrient level

low in nutrients moderately rich in nutrients rich in nutrients

Soil moisture level

very dry dry moist

Light requirements

sun

pH range

neutral alkaline

Host plant/forage plant

bees birds small mammals humans

Extreme environments

tolerant to dryness tolerates air pollution

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Visit our nurseries with multi-stem trees, climbing trees, trees for avenues and parks characteristic trees and solitary shrubs.

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Order this plant? Or would you like further information about Corylus colurna? Make an appointment for a detailed planting recommendation.
Call +31(0) 485 31 20 21 or email one of our advisors directly.
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Photos

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high-stem standard tree
Corylus colurna standard tree
high-stem standard tree
Corylus colurna standard tree
high-stem standard tree
Corylus colurna standard tree
high-stem standard tree
Corylus colurna standard tree
high-stem standard tree
Corylus colurna standard tree
high-stem standard tree
Corylus colurna standard tree
high-stem standard tree
Corylus colurna standard tree
high-stem standard tree
Corylus colurna standard tree
high-stem standard tree
Corylus colurna standard tree
high-stem standard tree
Corylus colurna standard tree
multi-stem multi-stem
Corylus colurna multi-stem
multi-stem multi-stem
Corylus colurna multi-stem
multi-stem-umbrella multi-stem umbrella
Corylus colurna multi-stem umbrella
multi-stem-umbrella multi-stem umbrella
Corylus colurna multi-stem umbrella
flowers flowers
Corylus colurna flowers
flowers flowers
Corylus colurna flowers
leaves leaves
Corylus colurna leaves
leaves leaves
Corylus colurna leaves
leaves leaves
Corylus colurna leaves
leaves leaves
Corylus colurna leaves
fruits fruits
Corylus colurna fruits
fruits fruits
Corylus colurna fruits
fruits fruits
Corylus colurna fruits
fruits fruits
Corylus colurna fruits
fruits fruits
Corylus colurna fruits
fruits fruits
Corylus colurna fruits
bark bark
Corylus colurna bark
bark bark
Corylus colurna bark
bark bark
Corylus colurna bark
bark bark
Corylus colurna bark
bark bark
Corylus colurna bark
bark bark
Corylus colurna bark
bark bark
Corylus colurna bark

Seasonal colours

Corylus colurna seizoenskleur
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Flowers

Flowers

catkins striking pendulous

Flower colour

yellow-brown

Flowering period

March - April

Leaves

Leaf colour

matt green underside grey-green

Leaves

deciduous cordate matt polished rough underside hairy doubly serrate

Autumn colour

golden yellow

Fruits

Fruit colour

brown

Fruits

striking edible nut

Bark

Bark colour

pale brown

Bark

peeling corky

Twigs

Twig colour

pale brown

Twigs

bare finely branched

Root system

Root system

deep slightly branched tap root central root

For and by green professionals

The TreeEbb is a platform for and by green professionals, in which we collect knowledge and experience from the sector and make this available for users. All the details and photos are free to use for non-commercial purposes. Want to share your tree knowledge? Send photographs and additional information to treeebb@ebben.nl

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Winter hardiness

A plant's winter hardiness is the coldest area in which it is frost-resistant. This is based on the average annual minimum temperature. Winter hardiness zones are thirteen different frost zones in steps of 5.5 degrees Celsius. This format is an international standard for the hardiness of plants. The zones in which the plant is frost-resistant are always included in the description of trees and other vegetation.

Winter hardiness is a genetic characteristic and is not influenced by the location in which the plant is cultivated. This means that a plant that has been cultivated for many years in winter-hardiness zone 6 but has a winter hardiness of 3 is perfectly suited for replanting in a colder zone. It will thrive there thanks to its genetic characteristics.

When choosing planting for a project, the winter hardiness of the plants is extremely important. By choosing species that match the zone in which the project is being created, it is possible to ensure that plants can withstand the minimum temperature in that area.

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