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Carya ovata (Shagbark hickory)

Intermediate
skill rating
4 hours care
per year
20m
Max height
15m
Max spread
20-50 Years
To maturity

Plant details

Botanical name

Carya ovata

Other names

Shagbark hickory, Shell-bark hickory, Little shell-bark hickory, Shellbark hickory, Carya alba

Genus

Carya Carya

Species

C. ovata - C. ovata is a broadly conical, deciduous tree with peeling, grey to brown bark and pinnate, mid-green leaves divided into five ovate to oblong, toothed leaflets turning golden-yellow in autumn. Male, yellow-green flower catkins and small spikes of female flowers in spring are followed by thick-shelled nuts, edible when ripe.


Carya ovata is: Deciduous

Habit

Broadly conical

Flower

Yellow-green, Green in Spring; Green, Yellow-green in Summer

Foliage

Mid-green in Spring; Mid-green in Summer; Mid-green in Autumn

How to care

Watch out for

Specific pests

Bark borer Bark borer

Crown gall , Leaf spot , Powdery mildew Crown gall , Leaf spot , Powdery mildew

General care

Pruning

Pruning Group 1 - Prune in late winter or early spring to maintain a healthy framework.

Propagation methods

Seed


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Where to grow

Carya ovata (Shagbark hickory) will reach a height of 20m and a spread of 15m after 20-50 Years.

Suggested uses

Architectural, Bog garden, Flavouring food and drinks, Specimen tree, Waterside

Cultivation

Plant in deep, fertile soil in full sun or partial shade. Develops a deep tap root so seedlings and young trees resent transplanting.

Soil type

Chalky, Loamy, Sandy

Soil drainage

Moist but well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Full Sun

Aspect

South, West

Exposure

Sheltered

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

Hardy (H4)

Companion plants

We do not currently have companion plants added for this plant.

Botanical name

Carya ovata

Other names

Shagbark hickory, Shell-bark hickory, Little shell-bark hickory, Shellbark hickory, Carya alba

Genus

Carya Carya

Species

C. ovata - C. ovata is a broadly conical, deciduous tree with peeling, grey to brown bark and pinnate, mid-green leaves divided into five ovate to oblong, toothed leaflets turning golden-yellow in autumn. Male, yellow-green flower catkins and small spikes of female flowers in spring are followed by thick-shelled nuts, edible when ripe.

Native to

Eastern North America

Foliage

Deciduous

Habit

Broadly conical


Colour

Flower

Yellow-green, Green in Spring; Green, Yellow-green in Summer

Foliage

Mid-green in Spring; Mid-green in Summer; Mid-green in Autumn


How to care

Watch out for

Specific pests

Bark borer

Specific diseases

Crown gall , Leaf spot , Powdery mildew

General care

Pruning

Pruning Group 1 - Prune in late winter or early spring to maintain a healthy framework.

Propagation methods

Seed


Monthly care advice


Where to grow

Carya ovata (Shagbark hickory) will reach a height of 20m and a spread of 15m after 20-50 Years.

Suggested uses

Architectural, Bog garden, Flavouring food and drinks, Specimen tree, Waterside

Cultivation

Plant in deep, fertile soil in full sun or partial shade. Develops a deep tap root so seedlings and young trees resent transplanting.

Soil type

Chalky, Loamy, Sandy

Soil drainage

Moist but well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Full Sun

Aspect

South, West

Exposure

Sheltered

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

Hardy (H4)

USDA zones

Zone 8, Zone 7, Zone 6, Zone 5, Zone 4

Defra's Risk register #1

Plant name

Carya ovata (Shagbark hickory)

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 #2

Plant name

Carya ovata (Shagbark hickory)

Common pest name

Plum; borer; American

Scientific pest name

Euzophera semifuneralis

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

Pest of Prunus; native to North America; which would be damaging if introduced to the UK. Statutory action would be taken against any interceptions and a PRA will help better assess the level of risk to the UK.

Defra's Risk register #3

Plant name

Carya ovata (Shagbark hickory)

Common pest name

Elm spanworm; Ennomid; white; Linden moth; snow-white

Scientific pest name

Ennomos subsignaria

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

Polyphagous moth pest which defoliates deciduous trees and; with repeated infestation; can cause tree death. Present in North America and current import requirements do not fully mitigate the risk of introduction. A PRA will help to assess the level of risk more fully.

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, Loamy, Sandy Tell us...
Soil drainage: Moist but well-drained Tell us...
Soil pH: Acid, Alkaline, Neutral Tell us...
Light: Full Sun Tell us...
Aspect: South, West Tell us...
Exposure: Sheltered Tell us...
Hardiness: Hardy (H4) Tell us...

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