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Alnus incana 'Aurea' (Grey alder 'Aurea' )

Beginner
skill rating
1 hour care
per year
15m
Max height
8m
Max spread
20-50 years
To maturity

Plant details

Botanical name

Alnus incana 'Aurea'

Other names

Grey alder 'Aurea'

Genus

Alnus Alnus

Variety or Cultivar

'Aurea' _ 'Aurea' is a conical, deciduous tree with dark green leaves that are yellow when young and grey white and hairy underneath. It bears yellow brown male catkins tinted red before the leaves in late winter and early spring and ovoid fruit in summer.


Alnus incana 'Aurea' is: Deciduous

Tree shape

Conical

Flower

Yellow-brown in Spring; Yellow-brown, Flushed red in Winter

Foliage

Yellow in Spring; Dark-green in Summer

How to care

Watch out for

Specific pests

Alder sucker , Leaf-mining sawflies Alder sucker , Leaf-mining sawflies

Bark canker Bark canker

General care

Propagation methods

Hardwood cuttings, Seed


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Where to grow

Alnus incana 'Aurea' (Grey alder 'Aurea' ) will reach a height of 15m and a spread of 8m after 20-50 years.

Suggested uses

Hedging/Screens, Low Maintenance, Wildlife, Waterside, Resistant to pollution, Foliage only

Cultivation

Thrives in poor, wet conditions.

Soil type

Chalky, Clay, Loamy

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

Other plants that tolerate difficult situations (e.g. pollution) include birch, hawthorn, elder and willow.

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

Botanical name

Alnus incana 'Aurea'

Other names

Grey alder 'Aurea'

Genus

Alnus Alnus

Variety or Cultivar

'Aurea' _ 'Aurea' is a conical, deciduous tree with dark green leaves that are yellow when young and grey white and hairy underneath. It bears yellow brown male catkins tinted red before the leaves in late winter and early spring and ovoid fruit in summer.

Foliage

Deciduous

Tree shape

Conical


Colour

Flower

Yellow-brown in Spring; Yellow-brown, Flushed red in Winter

Foliage

Yellow in Spring; Dark-green in Summer


How to care

Watch out for

Specific pests

Alder sucker , Leaf-mining sawflies

Specific diseases

Bark canker

General care

Propagation methods

Hardwood cuttings, Seed


Monthly care advice


Where to grow

Alnus incana 'Aurea' (Grey alder 'Aurea' ) will reach a height of 15m and a spread of 8m after 20-50 years.

Suggested uses

Hedging/Screens, Low Maintenance, Wildlife, Waterside, Resistant to pollution, Foliage only

Cultivation

Thrives in poor, wet conditions.

Soil type

Chalky, Clay, Loamy

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 10, Zone 9, Zone 8

Defra's Risk register #1

Plant name

Alnus incana 'Aurea' (Grey alder 'Aurea' )

Common pest name

Scientific pest name

Melampsoridium hiratsukanum

Type

Fungus

Current status in UK

Present (Limited)

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

5

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

4

General biosecurity comments

Pathogen of alder; established in the UK and elsewhere.

Defra's Risk register #2

Plant name

Alnus incana 'Aurea' (Grey alder 'Aurea' )

Common pest name

Alder bleeding canker; Alder Phytophthora root disease

Scientific pest name

Phytophthora alni

Type

Oomycete

Current status in UK

Present (Widespread)

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

4

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

4

General biosecurity comments

Damaging pathogen of Alder; first detected in the UK in 1993; which has subsequently spread to most areas. Alders are important in the context of watercourse management. No prospect of eradication or containment but possible co-ordinated action to mitigate impacts to be considered with stakeholders.

Defra's Risk register #3

Plant name

Alnus incana 'Aurea' (Grey alder 'Aurea' )

Common pest name

Scientific pest name

Phytophthora siskiyouensis

Type

Oomycete

Current status in UK

Present (Unknown Distribution)

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

3

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

4

General biosecurity comments

Pathogen causing disease of Alder and other tree species in the USA and Australia; now detected in the UK. Could possibly be mistaken for P. alni. A PRA will help to better assess the 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 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...

COMPANION PLANTS

Other plants that tolerate difficult situations (e.g. pollution) include birch, hawthorn, elder and willow.

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

GARDENS WITH THIS PLANT

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