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Achillea ptarmica (The Pearl Group) 'The Pearl' (clonal) (d)

sneezewort 'The Pearl'

sneezewort 'The Pearl'

© RHS

30 suppliers

  • Other common names sneezewort 'The Pearl'

  • Synonyms Achillea 'The Pearl'

  • Family Asteraceae

  • Genus Achillea can be mat-forming or upright perennials, mostly herbaceous, with sometimes aromatic, pinnately divided or simple and toothed leaves and flattened clusters of small, daisy-like flower-heads

  • Details 'The Pearl' is a vigorous perennial forming a spreading clump, with narrow dark green leaves and pure white, double flower-heads

Characteristics

  • Foliage Deciduous

  • Habit Spreading / Branched

  • Toxicity

  • 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)

    H7

Colour

Sunlight

  • Partial Shade

  • Aspect East-facing or West-facing or North-facing

  • Exposure Exposed or Sheltered

Soil

  • Loam

    Loam

  • Chalk

    Chalk

  • Sand

    Sand

  • MoistureMoist but well-drained

  • SoilLoam, Chalk, Sand

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 0.5-1 metres

  • Ultimate spread 0.5-1 metres

  • Time to ultimate height 2-5 years

How to grow

Cultivation Requires a more moist soil than most other achilleas but not waterlogged, does best in partial shade

Propagation Propagate by division in spring

Suggested planting locations and garden types Flower borders and beds Cut Flowers Gravel Garden Coastal Prairie Planting Cottage & Informal Garden Wildlife Gardens

How to care

Pruning Cut back untidy foliage in spring

Pests Can get aphids

Diseases May suffer from powdery mildews

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