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Artemisia arborescens AGM

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© RHS

Characteristics

Plant type

Shrub

Habit

Bushy

Fragrance

Leaf

Resilience

Hardiness

H3 (half hardy - unheated greenhouse/mild winter)

Colour

Flower

Yellow in Summer

Foliage

Grey/Silver in Autumn, Spring, Summer and Winter

Size

Ultimate height

0.5-1 metres

Ultimate spread

0.5-1 metres

Time to ultimate height

2-5 years


Preferred common name

tree wormwood

Family

Asteraceae


Artemisia can be shrubs, perennials or annuals, evergreen or deciduous, with usually grey, aromatic, often divided foliage and rather insignificant flower-heads

A. arborescens is an upright evergreen shrub with silvery leaves finely divided into narrow segments, and long, one-sided sprays of small yellow flowers in late summer

Other common names

  • old woman
  • silvery wormwood

How to grow

Sunlight

  • Full sun

Aspect

  • South-facing or West-facing
  • Sheltered

Cultivation

Grow in a sheltered situation in fertile well-drained soil with full sun.

Soil

  • Well-drained
  • Acid, Alkaline or Neutral
  • Sand, Chalk or Loam

Propagation

Root softwood stem-tip cuttings or heel cuttings of side-shoots in spring or early summer. Propagate by seed sown in containers in spring or autumn in a cold frame. Take cuttings regularly as plant may not survive harsh winters

Suggested planting locations and garden types

Coastal, City/Courtyard Gardens, Cottage/Informal Garden, Flower borders and beds or Gravel Garden


How to care

Pruning

Pruning group 6

Pests

May suffer from aphids

Diseases

Usually disease free