Growing Guide
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Artemisia 'Powis Castle'

Herbaceous Perennial Flower

Artemisia x 'Powis Castle'
Asteraceae Family
Synonym: Artemisia arborescens x Artemisia absinthium, Artemisia arborescens 'Brass Band'

Perhaps only marginally hardy in much of New York, this woody-based perennial can form 3-foot-high and -wide clumps of feathery silver-gray foliage the first year after transplanting.

Site Characteristics
  • full sun

Soil conditions:

  • tolerates droughty soil
  • requires well-drained soil
  • tolerates low fertility

Hardiness zones:

  • 6 to 8
Precise Zones have not been determined. May be marginally hardy in Zone 5. Plant in protected areas in Zone 6.

Special locations:

  • xeriscapes
Plant Traits

Lifecycle: perennial

Woody-based perennial.

Ease-of-care: moderately difficult

May not be winterhardy in some sites in Zone 6 and cooler. Needs careful pruning to maintain appearance through the season.

Height: 2 to 3 feet

Spread: 3 to 4 feet

Bloom time: late summer

Flower color: yellow

Silvery yellow.

Foliage color: gray-green

Silvery gray.

Foliage texture: fine

Shape: cushion, mound or clump

Shape in flower: flower stalks with sprays of flowers

Flower stalks usually removed to maintain foliage quality.

Special Considerations
Special characteristics:
  • non-aggressive
  • non-invasive
  • not native to North America - Hybrid cross of Mediterranean and European/Asian parents.
Growing Information
How to plant:

Propagate by cuttings - Make cuttings in summer.

Division is very difficult.

Maintenance and care:
Make cuttings often to replace plants that die.

Prune in spring after buds begin to break to control height and spread. Cutting back into old wood that has no live buds can kill plants.

Plants often do not flower. If they do, pinch off buds before they open.

If plants get leggy and open up in summer, cut back by a half to a third.

More growing information: How to Grow Perennials