Carpinus omeiensis (Mount Omei hornbeam)

Botanical name

Carpinus omeiensis

Other names

Mount Omei hornbeam

Genus

Carpinus Carpinus

Species

C. omeiensis - C. omeiensis is a small, upright, deciduous tree with ovate to elliptic, prominently veined, glossy, toothed, mid-green leaves, reddish-purple when young, and, in late spring and early summer, catkins of pale green flowers are followed by brown, hop-like fruit.

Foliage

Deciduous

Tree shape

Upright

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Colour

Flower

Light green in Spring

Foliage

Reddish-purple, Mid-green in Spring; Mid-green in Summer; Mid-green in Autumn

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How to care

Watch out for

Specific pests

Aphids , Caterpillars

Specific diseases

Coral spot , Powdery mildew

General care

Pruning

Pruning group 1

Propagation

Sow seed in a seedbed in autumn.

Propagation methods

Grafting, Seed, Softwood cuttings

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Monthly care advice

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Where to grow

Carpinus omeiensis (Mount Omei hornbeam) will reach a height of 7m and a spread of 5m after 20-50 years.

Suggested uses

Architectural, Foliage only, Hedging/Screens, Low Maintenance, Woodland

Cultivation

Grow in full or partial shade. Will tolerate a range of soil conditions.

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

Defra's Risk register #1

Plant name

Carpinus omeiensis (Mount Omei hornbeam)

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

Carpinus omeiensis (Mount Omei hornbeam)

Common pest name

Black timber bark beetle; Smaller alnus bark beetle; tea root borer

Scientific pest name

Xylosandrus germanus

Type

Insect

Current status in UK

Present (Limited)

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

4

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

3

General biosecurity comments

Ambrosia beetle affecting a wide range of trees and woody hosts. Widespread in Europe and elsewhere and now present in the south of England. Impacts can be reduced by good silvicultural practices. Surveillance is being carried out to better determine distribution.

Defra's Risk register #3

Plant name

Carpinus omeiensis (Mount Omei hornbeam)

Common pest name

Stubby-root nematode

Scientific pest name

Trichodorus cedarus

Type

Nematode

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

Polyphagous nematode pest from Asia; occasionally intercepted by the UK. Causes direct feeding damage on plant roots and has the potential to vector viruses.

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