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Acer saccharum subsp. leucoderme (Chalk maple)

Beginner
skill rating
1 hour care
per year
9m
Max height
6m
Max spread
20-50 years
To maturity

Plant details

Botanical name

Acer saccharum subsp. leucoderme

Other names

Chalk maple, Whitebarked maple, Acer leucoderme, Acer saccharum var. leucoderme, Acer nigrum var. leucoderme

Genus

Acer Acer

Species

A. saccharum subsp. leucoderme - A. saccharum subsp. leucoderme is a compact, rounded, deciduous tree with pale grey bark and dark green leaves with three or five, wavy or coarsely-toothed, lobes. Inconspicuous flowers in spring are followed by winged fruit ripening brown in autumn.


Acer saccharum subsp. leucoderme is: Deciduous

Habit

Oval-headed, Rounded

Flower

Yellow-green in Spring

Foliage

Dark-green in Spring; Dark-green in Summer; Red, Orange, Yellow in Autumn

How to care

Watch out for

Specific pests

Aphids , Horse chestnut scale Aphids , Horse chestnut scale

Verticillium wilt Verticillium wilt

General care

Pruning

Pruning group 1. Prune in late autumn to midwinter only.

Propagation methods

Seed, Softwood cuttings


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Where to grow

Acer saccharum subsp. leucoderme (Chalk maple) will reach a height of 9m and a spread of 6m after 20-50 years.

Suggested uses

Specimen tree, Low Maintenance, Foliage only, City, Architectural

Cultivation

Grow in fertile, moist but well-drained, acid to slightly alkaline 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

Acer saccharum subsp. leucoderme

Other names

Chalk maple, Whitebarked maple, Acer leucoderme, Acer saccharum var. leucoderme, Acer nigrum var. leucoderme

Genus

Acer Acer

Species

A. saccharum subsp. leucoderme - A. saccharum subsp. leucoderme is a compact, rounded, deciduous tree with pale grey bark and dark green leaves with three or five, wavy or coarsely-toothed, lobes. Inconspicuous flowers in spring are followed by winged fruit ripening brown in autumn.

Native to

Southeastern United States

Foliage

Deciduous

Habit

Oval-headed, Rounded


Colour

Flower

Yellow-green in Spring

Foliage

Dark-green in Spring; Dark-green in Summer; Red, Orange, Yellow in Autumn


How to care

Watch out for

Specific pests

Aphids , Horse chestnut scale

Specific diseases

Verticillium wilt

General care

Pruning

Pruning group 1. Prune in late autumn to midwinter only.

Propagation methods

Seed, Softwood cuttings


Monthly care advice


Where to grow

Acer saccharum subsp. leucoderme (Chalk maple) will reach a height of 9m and a spread of 6m after 20-50 years.

Suggested uses

Specimen tree, Low Maintenance, Foliage only, City, Architectural

Cultivation

Grow in fertile, moist but well-drained, acid to slightly alkaline 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

Defra's Risk register #1

Plant name

Acer saccharum subsp. leucoderme (Chalk maple)

Common pest name

Alfalfa dwarf; Anaheim disease; California vine disease; Dwarf disease of alfalfa; Dwarf disease of lucerne; Leaf scald of oleander; Leaf scald of plum; Leaf scorch; Phony disease of peach; Pierce's disease of grapevine; Variegated chlorosis of citrus

Scientific pest name

Xylella fastidiosa subsp. multiplex

Type

Bacterium

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)

4

General biosecurity comments

A bacterial disease with a wide host range detected in Corsica. Although EU regulated; there remains some concern about the risk of introduction. This subspecies is known to be able to thrive in cooler climates. Should an outbreak occur; there would be a need for eradication action which would result in environmental and social impacts.

Defra's Risk register #2

Plant name

Acer saccharum subsp. leucoderme (Chalk maple)

Common pest name

Apple root knot nematode

Scientific pest name

Meloidogyne mali

Type

Nematode

Current status in UK

Unknown

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

3

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

4

General biosecurity comments

UK (along with certain other European countries) received potentially infested trees in 1992; but these were destroyed at the end of the trial period and targeted surveillance has failed to find any trace of the nematode. Main impacts are on elm; apple and mulberry and industry should source such material carefully.

Defra's Risk register #3

Plant name

Acer saccharum subsp. leucoderme (Chalk maple)

Common pest name

Japanese long scale; Japanese maple scale; Long scale; Japanese; Pear white scale

Scientific pest name

Lopholeucaspis japonica

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

Regulated only on Citrus at present; regulation on other hosts needs to be considered. Only likely to be a pest under glass in 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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