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Achillea 'Credo' AGM

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© RHS 1998

Characteristics

Plant type

Herbaceous Perennial

Habit

Columnar/Upright

Toxicity

Resilience

Hardiness

H7 (very hardy)

Colour

Flower

Cream and Pale Yellow in Summer

Foliage

Green in Spring and Summer

Size

Ultimate height

0.5-1 metres

Ultimate spread

0.5-1 metres

Time to ultimate height

2-5 years


Preferred common name

yarrow 'Credo'

Family

Asteraceae


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

'Credo' is an upright perennial, sometimes short-lived, with finely-cut foliage and flat heads of creamy-yellow flowers

Synonym(s)

  • Achillea millefolium 'Credo'

How to grow

Sunlight

  • Full sun

Aspect

  • South-facing, East-facing or West-facing
  • Exposed

Cultivation

An open sunny position in a moist but well-drained soil is best, but it will tolerate most situations apart from heavy, wet clay in winter

Soil

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

Propagation

Propagate by division in spring

Suggested planting locations and garden types

Architectural, Low Maintenance or Flower borders and beds


How to care

Pruning

Cut back untidy foliage in spring

Pests

Can get aphids

Diseases

May suffer from powdery mildews