Artemisia 'Powis Castle' (Powis Castle Wormwood, Mugwort) — densely packed, finely-divided, feathery silver-grey aromatic foliage; rarely flowers significantly. Fully hardy, evergreen, full sun to maintain its compact shape and vibrant silver colour.
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🌿 Grown at our London nursery — collect in person or arrange local delivery
📦 Dispatched within 3 business days via Royal Mail
Product features
Botanical name: Artemisia 'Powis Castle'
Common name: Powis Castle Wormwood, Mugwort
Height: 60cm to 1m
Spread: 1m to 1.2m
Foliage: Densely packed, finely-divided, feathery silver-grey leaves, strongly aromatic
Flower: Small, inconspicuous, dull yellowish-brown flower heads; rarely flowers significantly
Attractive to wildlife: No — largely ignored by pollinators, but resistant to deer, rabbits, and slugs
Soil Type: Well-drained sand, loam, or chalk; poor, lean, or gravelly soils
Drought tolerant: Yes, exceptional once established
Hardy: Yes (RHS H4, down to -10°C); requires sharp drainage
Position: Full sun
Evergreen: Yes, semi-evergreen to evergreen
Suitable for: Mediterranean schemes, gravel gardens, hot dry borders, structural low hedging
Materials and care
Light: Requires full sun to maintain its compact shape and vibrant silver colour
Aspect: Thrives in exposed or sheltered, south- or west-facing positions
Soil type: Prefers poor, lean, sandy, or gravelly soils
Drainage: Critical — requires excellent drainage, dies in waterlogged winter soil
Watering: Water moderately until established; extremely drought-tolerant once mature
Pruning: Cut back hard in early spring to 10–15cm to stimulate bushy new growth
Fertiliser: Do not feed — rich soil makes foliage floppy and short-lived
Propagation: Take semi-ripe cuttings in midsummer — cannot be divided
