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Corylus colurna (Turkish hazel)

Beginner
skill rating
1 hour care
per year
15m
Max height
12m
Max spread
20-50 years
To maturity

Plant details

Botanical name

Corylus colurna

Other names

Turkish hazel

Genus

Corylus Corylus

Species

C. colurna - C. colurna is a large, deciduous tree of conical habit with ovate leaves with serrated margins. In spring, it bears yellow catkins, followed by edible nuts encased by a fringed husk.


Corylus colurna is: Deciduous

Tree shape

Conical

Awards

RHS AGM (Award of Garden Merit)

Flower

Yellow in Spring

Foliage

Green in Summer

How to care

Watch out for

Specific pests

Aphids , Caterpillars , Sawflies Aphids , Caterpillars , Sawflies

Diseases

Generally disease-free.

General care

Propagation methods

Grafting, Seed


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Where to grow

Corylus colurna (Turkish hazel) will reach a height of 15m and a spread of 12m after 20-50 years.

Suggested uses

Architectural, Hedging/Screens, Low Maintenance, Wildlife

Cultivation

Plant in moist, free-draining soil in full sun or partial shade.

Soil type

Chalky, Clay, Loamy, Sandy (will tolerate most soil types)

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

North, South, East, West

Exposure

Exposed, Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

Companion plants

Botanical name

Corylus colurna

Other names

Turkish hazel

Genus

Corylus Corylus

Species

C. colurna - C. colurna is a large, deciduous tree of conical habit with ovate leaves with serrated margins. In spring, it bears yellow catkins, followed by edible nuts encased by a fringed husk.

Foliage

Deciduous

Tree shape

Conical

Awards

RHS AGM (Award of Garden Merit)


Colour

Flower

Yellow in Spring

Foliage

Green in Summer


How to care

Watch out for

Specific pests

Aphids , Caterpillars , Sawflies

Diseases

Generally disease-free.

General care

Propagation methods

Grafting, Seed


Monthly care advice


Where to grow

Corylus colurna (Turkish hazel) will reach a height of 15m and a spread of 12m after 20-50 years.

Suggested uses

Architectural, Hedging/Screens, Low Maintenance, Wildlife

Cultivation

Plant in moist, free-draining soil in full sun or partial shade.

Soil type

Chalky, Clay, Loamy, Sandy (will tolerate most soil types)

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

North, South, East, West

Exposure

Exposed, Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

USDA zones

Zone 9, Zone 8, Zone 7, Zone 6, Zone 5, Zone 4, Zone 3

Defra's Risk register #1

Plant name

Corylus colurna (Turkish hazel)

Common pest name

Asian longhorn beetle; Starry sky beetle

Scientific pest name

Anoplophora glabripennis

Type

Insect

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

2

Impact (1 is very low - 5 is very high)

4

General biosecurity comments

Recognised threat to a wide range of deciduous tress native to the UK. Already regulated it is a priority for continued surveillance and statutory action. The risk of entry is further mitigated by EU legislation requiring the monitoring of wooden packaging material originating from China.

Defra's Risk register #2

Plant name

Corylus colurna (Turkish hazel)

Common pest name

Lemon tree borer

Scientific pest name

Oemona hirta

Type

Insect

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

3

Impact (1 is very low - 5 is very high)

3

General biosecurity comments

Wood boring beetle native to New Zealand with a wide host range of trees and shrubs. The UK will press for consideration of UK listing.

Defra's Risk register #3

Plant name

Corylus colurna (Turkish hazel)

Common pest name

Scientific pest name

Monochamus guttulatus

Type

Insect

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

2

Impact (1 is very low - 5 is very high)

3

General biosecurity comments

East Asian longhorn beetle whose larvae feed on a range of deciduous trees; with a preference for dying trees. A PRA will help to better assess the level of risk to the UK.

About this section

Our plants are under greater threat than ever before. There is increasing movement of plants and other material traded from an increasing variety of sources. This increases the chances of exotic pests arriving with imported goods and travellers, as well as by natural means. Shoot is working with Defra to help members to do their part in preventing the introduction and spread of invasive risks.

Traveling or importing plants? Please read "Don't risk it" advice here

Suspected outbreak? Click here for contact details to report to the relevant authority.

Date updated: 7th March 2019 For more information visit: https://planthealthportal.defra.gov.uk/

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This plant likes... Garden match
Soil types: Chalky, Clay, Loamy, Sandy (will tolerate most soil types) Tell us...
Soil drainage: Moist but well-drained, Well-drained Tell us...
Soil pH: Acid, Alkaline, Neutral Tell us...
Light: Partial Shade, Full Sun Tell us...
Aspect: North, South, East, West Tell us...
Exposure: Exposed, Sheltered Tell us...
Hardiness: Hardy (H4) Tell us...

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