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Aster trifoliatus subsp. ageratoides 'Ezo Murasaki' (Asian aster 'Ezo Murasaki')

Beginner
skill rating
1 hour care
per year
0.6m
Max height
0.6m
Max spread
2-5 years
To maturity

Plant details

Botanical name

Aster trifoliatus subsp. ageratoides 'Ezo Murasaki'

Other names

Asian aster 'Ezo Murasaki'

Genus

Aster Aster

Variety or Cultivar

'Ezo Murasaki' _ 'Ezo Murasaki' is a mound-forming, deciduous perennial with toothed, lance-shaped, dark-green leaves and, throughout autumn, daisy-like, purple flowers with yellow centres.


Aster trifoliatus subsp. ageratoides 'Ezo Murasaki' is: Deciduous

Habit

Cushion or Mound Forming

Flower

Purple in Autumn

Foliage

Green in Spring; Green in Summer; Green in Autumn

How to care

Watch out for

Specific pests

Aphids , Eelworms (leaf and bud) , Michaelmas daisy mite , Slugs , Snails Aphids , Eelworms (leaf and bud) , Michaelmas daisy mite , Slugs , Snails

Fusarium wilt , Grey mould , Leaf spot Fusarium wilt , Grey mould , Leaf spot

General care

Pruning

Deadhead regularly to prolong flowering. After flowering, cut the flowered stems to the ground and mulch with well-rotted garden compost or manure around the base of the plant.

Propagation methods

Division


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Where to grow

Aster trifoliatus subsp. ageratoides 'Ezo Murasaki' (Asian aster 'Ezo Murasaki') will reach a height of 0.6m and a spread of 0.6m after 2-5 years.

Suggested uses

Beds and borders, City, Cottage/Informal, Flower Arranging, Low Maintenance, Wildlife

Cultivation

Plant in moderately fertile, moist soil in full sun or light shade. May spread rapidly and crowd out smaller plants if grown in ideal conditions. Tends to be less aggressive in clay soil. Tolerates dry shade.

Soil type

Chalky, Clay, Loamy, Sandy (will tolerate most soil types)

Soil drainage

Well-drained, Moist but well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

South, East, West

Exposure

Exposed, 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

Aster trifoliatus subsp. ageratoides 'Ezo Murasaki'

Other names

Asian aster 'Ezo Murasaki'

Genus

Aster Aster

Variety or Cultivar

'Ezo Murasaki' _ 'Ezo Murasaki' is a mound-forming, deciduous perennial with toothed, lance-shaped, dark-green leaves and, throughout autumn, daisy-like, purple flowers with yellow centres.

Foliage

Deciduous

Habit

Cushion or Mound Forming


Colour

Flower

Purple in Autumn

Foliage

Green in Spring; Green in Summer; Green in Autumn


How to care

Watch out for

Specific pests

Aphids , Eelworms (leaf and bud) , Michaelmas daisy mite , Slugs , Snails

Specific diseases

Fusarium wilt , Grey mould , Leaf spot

General care

Pruning

Deadhead regularly to prolong flowering. After flowering, cut the flowered stems to the ground and mulch with well-rotted garden compost or manure around the base of the plant.

Propagation methods

Division


Monthly care advice


Where to grow

Aster trifoliatus subsp. ageratoides 'Ezo Murasaki' (Asian aster 'Ezo Murasaki') will reach a height of 0.6m and a spread of 0.6m after 2-5 years.

Suggested uses

Beds and borders, City, Cottage/Informal, Flower Arranging, Low Maintenance, Wildlife

Cultivation

Plant in moderately fertile, moist soil in full sun or light shade. May spread rapidly and crowd out smaller plants if grown in ideal conditions. Tends to be less aggressive in clay soil. Tolerates dry shade.

Soil type

Chalky, Clay, Loamy, Sandy (will tolerate most soil types)

Soil drainage

Well-drained, Moist but well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

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 8, Zone 7, Zone 6, Zone 5

Defra's Risk register #1

Plant name

Aster trifoliatus subsp. ageratoides 'Ezo Murasaki' (Asian aster 'Ezo Murasaki')

Common pest name

Asterleafhopper

Scientific pest name

Macrosteles quadrilineatus

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

Leafhopper pest native to North America; where it is responsible for purple top wilt disease of potatoes and aster yellows in lettuce. Not known to be present in the UK or elsewhere in the EU and statutory action will be taken in response to confirmed findings.

Defra's Risk register #2

Plant name

Aster trifoliatus subsp. ageratoides 'Ezo Murasaki' (Asian aster 'Ezo Murasaki')

Common pest name

Corn borer; Corn moth; European corn borer; European maize borer; European stalk borer; Maize pyralid

Scientific pest name

Ostrinia nubilalis

Type

Insect

Current status in UK

Present (Limited)

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

3

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

3

General biosecurity comments

Polyphagous boring pest present in the UK since the 1930’s. A maize-affecting race was detected for the first time in 2010. Industry may wish to monitor for its presence and mitigate against impacts.

Defra's Risk register #3

Plant name

Aster trifoliatus subsp. ageratoides 'Ezo Murasaki' (Asian aster 'Ezo Murasaki')

Common pest name

Green semi-looper

Scientific pest name

Chrysodeixis eriosoma

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 is morphologically identical to a pest already established in the UK in protected environments and being controlled by IPM. Not expected to cause greater impacts than other species of Chrysodeixis in 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, Sandy (will tolerate most soil types) Tell us...
Soil drainage: Well-drained, Moist but well-drained Tell us...
Soil pH: Acid, Alkaline, Neutral Tell us...
Light: Partial Shade, Full Sun Tell us...
Aspect: South, East, West Tell us...
Exposure: Exposed, Sheltered Tell us...
Hardiness: Hardy (H4) Tell us...

GARDENS WITH THIS PLANT

Old garden
Old garden
Sue Kunzmann

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