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Artemisia 'Powis Castle' (Wormwood 'Powis Castle')

Beginner
skill rating
1 hour care
per year
0.5m
Max height
1m
Max spread
5-10 years
To maturity

Plant details

Botanical name

Artemisia 'Powis Castle'

Other names

Wormwood 'Powis Castle', Artemisia arborescens x absinthium, Wormwood 'Powys Castle', Artemisia arborescens 'Brass Band', Artemisia arborescens 'Powis Castle'

Genus

Artemisia Artemisia

Variety or Cultivar

'Powis Castle' _ 'Powis Castle' is a compact, rounded, evergreen shrub with finely divided, silvery-grey leaves and narrow panicles of insignificant, dull yellow flowers in summer.


Artemisia 'Powis Castle' is: Evergreen

Fragrance

Leaves are aromatic.

Habit

Bushy, Clump-forming, Compact

Awards

RHS AGM (Award of Garden Merit)

Flower

Insignificant or absent, Pale-yellow in Summer

Foliage

Grey-green, Green in Summer

How to care

Watch out for

Specific pests

Aphids , Gall midges Aphids , Gall midges

General care

Pruning

Cut back in autumn. In cold areas, cut back in spring. Pinch out shoot tips of young plants to encourage bushy growth. Discard old plants that cease to make new growth, they do not renovate well and should be replaced.

Propagation methods

Semi-hardwood cuttings


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Where to grow

Artemisia 'Powis Castle' (Wormwood 'Powis Castle') will reach a height of 0.5m and a spread of 1m after 5-10 years.

Suggested uses

Cottage/Informal, Flower Arranging, Beds and borders, Low Maintenance, Foliage only

Cultivation

Plant in well-drained soil in a sunny, sheltered site.

Soil type

Chalky, Loamy, Sandy

Soil drainage

Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

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), Tender in frost (H3)

Companion plants

The pretty silvery leaves of this plant work well with pink and purple cistus, and orange lillies or poppies.

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

Botanical name

Artemisia 'Powis Castle'

Other names

Wormwood 'Powis Castle', Artemisia arborescens x absinthium, Wormwood 'Powys Castle', Artemisia arborescens 'Brass Band', Artemisia arborescens 'Powis Castle'

Genus

Artemisia Artemisia

Variety or Cultivar

'Powis Castle' _ 'Powis Castle' is a compact, rounded, evergreen shrub with finely divided, silvery-grey leaves and narrow panicles of insignificant, dull yellow flowers in summer.

Foliage

Evergreen

Fragrance

Leaves are aromatic.

Habit

Bushy, Clump-forming, Compact

Awards

RHS AGM (Award of Garden Merit)


Colour

Flower

Insignificant or absent, Pale-yellow in Summer

Foliage

Grey-green, Green in Summer


How to care

Watch out for

Specific pests

Aphids , Gall midges

General care

Pruning

Cut back in autumn. In cold areas, cut back in spring. Pinch out shoot tips of young plants to encourage bushy growth. Discard old plants that cease to make new growth, they do not renovate well and should be replaced.

Propagation methods

Semi-hardwood cuttings


Monthly care advice


Where to grow

Artemisia 'Powis Castle' (Wormwood 'Powis Castle') will reach a height of 0.5m and a spread of 1m after 5-10 years.

Suggested uses

Cottage/Informal, Flower Arranging, Beds and borders, Low Maintenance, Foliage only

Cultivation

Plant in well-drained soil in a sunny, sheltered site.

Soil type

Chalky, Loamy, Sandy

Soil drainage

Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

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), Tender in frost (H3)

USDA zones

Zone 10, Zone 9, Zone 8, Zone 7, Zone 6, Zone 5, Zone 4

Defra's Risk register #1

Plant name

Artemisia 'Powis Castle' (Wormwood 'Powis Castle')

Common pest name

Scientific pest name

Phytophthora tentaculata Kröber & Marwitz - All Hosts

Type

Oomycete

Current status in UK

Absent

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

5

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

3

General biosecurity comments

Polyphagous pathogen present in parts of Europe and beyond.

Defra's Risk register #2

Plant name

Artemisia 'Powis Castle' (Wormwood 'Powis Castle')

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.

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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July 2019

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Artemisia 'Powis Castle

Artemesia 'Powis Castle'

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This plant likes... Garden match
Soil types: Chalky, Loamy, Sandy Tell us...
Soil drainage: Well-drained Tell us...
Soil pH: Acid, Alkaline, Neutral Tell us...
Light: Full Sun Tell us...
Aspect: South, East, West Tell us...
Exposure: Exposed, Sheltered Tell us...
Hardiness: Hardy (H4), Tender in frost (H3) Tell us...

COMPANION PLANTS

The pretty silvery leaves of this plant work well with pink and purple cistus, and orange lillies or poppies.

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

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ARTICLES WITH THIS PLANT

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View all 19 articles


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