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Artemisia 'Powis Castle' (Wormwood 'Powis Castle')
1 hour care
per year
per year
0.5m
Max height
Max height
1m
Max spread
Max spread
5-10 years
To maturity
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
Pale-yellow, Insignificant or absent in Summer
Foliage
Green, Grey-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)
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Colour
Flower
Pale-yellow, Insignificant or absent in Summer
Foliage
Green, Grey-green in Summer
How to care
Watch out for
Specific pests
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
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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)
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/
In order to add a note on this plant, please add this plant to your plant lists.
| 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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