• AGM plants

    AGM plants have been through a rigourous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Achillea ptarmica 'Aunt Stientje'

Sneezewort 'Aunt Stientje'

Sneezewort 'Aunt Stientje'

© � RHS

  • Other common names Sneezewort 'Aunt Stientje'

  • 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

  • Family Asteraceae / Asteraceae

  • Species 'Aunt Stientje' is a perennial forming a spreading clump of erect stems with narrow dark green leaves, and clusters of creamy-white flowers

Characteristics

  • Foliage Deciduous

  • Habit Bushy

Colour

Sunlight

  • Partial Shade

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

  • Exposure Exposed or Sheltered

Soil

  • Chalk

    Sand

  • Chalk

    Chalk

  • Chalk

    Loam

  • MoistureMoist but well-drained

  • SoilSand, Chalk, Loam

  • 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 Cottage & Informal Garden Prairie Planting

How to care

Pruning Cut back untidy foliage in spring

Pests Can get aphids

Diseases May suffer from powdery mildews

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