Artemisia 'Powis Castle'

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wormwood 'Powis Castle'

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Synonyms

Artemisia arborescens 'Powis Castle'
Artemisia arborescens 'Brass Band'

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An evergreen dwarf shrub of low, rounded habit, with finely divided, silvery leaves and, in late summer, insignificant dull yellow flower-heads in narrow panicles

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
5–10 years
Max Spread
0.5-1 metres
Max Height
0.1-0.5 metres

Growing Conditions

Chalk Loam Sand
Moisture
Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
South–facing or West–facing or East–facing
Exposure
Exposed or Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

  • H1A: under glass all year (>15C)
  • H1B: can be grown outside in the summer (10 - 15)
  • H1C: can be grown outside in the summer (5 - 10)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
  • H4: hardy through most of the UK (-10 to -5)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
  • H6: hardy in all of UK and northern Europe (-20 to -15)
  • H7: hardy in the severest European continental climates (< -20)
H3
Drought Resistance
Yes

Colour & Scent

Fragrance Foliage
Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Asteraceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Bushy
Genus
Artemisia can be shrubs, perennials or annuals, evergreen or deciduous, with usually grey, aromatic, often divided foliage and rather insignificant flower-heads
Name Status
Accepted

How to Grow

Cultivation

Grow in fertile well-drained soil in sun.

Propagation

Propagate by semi-hardwood cuttings

Suggested planting locations and garden types

  • Gravel garden
  • Cottage and informal garden
  • Low Maintenance
  • Flower borders and beds

Pruning

Pruning Group 7 Cut back to the lowest, new shoots near the base in mid to late spring

Pests

May be susceptible to aphids and gall midge

Diseases

May be susceptible to honey fungus