Magnolia grandiflora 'Exmouth' (Evergreen magnolia 'Exmouth')

Botanical name

Magnolia grandiflora 'Exmouth'

Other names

Evergreen magnolia 'Exmouth'

Genus

Magnolia Magnolia

Variety or Cultivar

'Exmouth' _ 'Exmouth' is a large evergreen tree with large, fragrant cream flowers from mid-spring to early autumn. It can take 10 years to flower.

Foliage

Evergreen

Fragrance

Flowers are richly fragrant.

Tree shape

Conical

Awards

RHS AGM (Award of Garden Merit)

Colour

Flower

Cream in Summer; Cream in Autumn

Foliage

Dark-green in All seasons

How to care

Watch out for

Specific pests

Capsid bug , Horse chestnut scale , Snails

Diseases

Generally disease free.

General care

Propagation methods

Semi-hardwood cuttings, Layering

Monthly care advice

Where to grow

Magnolia grandiflora 'Exmouth' (Evergreen magnolia 'Exmouth') will reach a height of 12m and a spread of 12m after 20-50 Years.

Suggested uses

Architectural, City, Cottage/Informal, Low Maintenance, Woodland

Cultivation

Plant in moist, humus-rich soil. Some protection may be needed from late winter frosts.

Soil type

Clay, Loamy, Sandy

Soil drainage

Well-drained, Moist but well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

North, South, East, West

Exposure

Sheltered

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

Hardy (H4), Tender in frost (H3)

USDA zones

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

Defra's Risk register #1

Plant name

Magnolia grandiflora 'Exmouth' (Evergreen magnolia 'Exmouth')

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.

Defra's Risk register #2

Plant name

Magnolia grandiflora 'Exmouth' (Evergreen magnolia 'Exmouth')

Common pest name

Scientific pest name

Phytophthora kernoviae

Type

Oomycete

Current status in UK

Present (Limited)

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

2

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

4

General biosecurity comments

Pathogen of certain tree and shrub species; subject to a containment strategy the UK.

Defra's Risk register #3

Plant name

Magnolia grandiflora 'Exmouth' (Evergreen magnolia 'Exmouth')

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.

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/