About
Achillea ptarmica (The Pearl Group) 'Boule de Neige' is a robust perennial that creates a lush, spreading mound reaching heights of up to 90 cm. It features slender, deep green foliage, and produces clusters of white, double or semi-double pompom flowers from mid-summer through autumn.
About the genus
Achillea consists of perennial plants that can grow in a mat-forming or upright habit. These mostly herbaceous species feature leaves that may be aromatic, either pinnately divided or simple with serrated edges. The plants produce flattened clusters of small, daisy-like flower heads.
Growing conditions
- Sunlight
- Full sun
- Soil type
- Chalk, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained, Well-drained
- Aspect
- East-facing, South-facing, West-facing
- Exposure
- Exposed
- UK hardiness
- H7
Plant details
- Plant type
- Herbaceous Perennial
- Habit
- Clump forming
- Foliage
- Deciduous
- Height
- 0.5-1 metres
- Spread
- 0.5-1 metres
- Time to full height
- 2-5 years
- Suggested uses
- Cottage and informal garden, Gravel garden, Wildlife gardens
Care notes
- 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
- Pruning
- Cut back untidy foliage in spring; deadheading may encourage repeat flowering in the summer
- Propagation
- Propagate by division in spring
- Pest resistance
- May be susceptible to aphids
- Disease resistance
- May be susceptible to powdery mildews