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Geranium pyrenaicum 'Bill Wallis'

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© RHS

Characteristics

Plant type

Herbaceous Perennial

Habit

Bushy

Resilience

Hardiness

old H4 (hardy)

Colour

Flower

Purple in Autumn, Spring and Summer

Foliage

Green in Autumn, Spring and Summer

Size

Ultimate height

0.1-0.5 metres

Ultimate spread

0.1-0.5 metres

Time to ultimate height

2-5 years


Preferred common name

mountain cranesbill 'Bill Wallis'

Family

Geraniaceae


Geranium can be annuals, biennials and perennials, herbaceous or evergreen, with rounded, usually palmately lobed or divided leaves, and lax inflorescences of rounded, 5-petalled flowers

'Bill Wallis' is a rather lax, sprawling perennial to 30cm tall, with small, rounded, lobed leaves and open sprays of vivid purple flowers 2cm wide, from late spring to late autumn

How to grow

Sunlight

  • Full sun
  • Part shade

Aspect

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

Cultivation

Grow in moderately fertile well-drained soil in full sun or partial shade. Most soils (unless waterlogged) in either sun or shade are tolerated

Soil

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

Propagation

Propagate by division between autumn and early spring or cut back plants after flowering in summer then divide, replant and water well

Suggested planting locations and garden types

Cottage/Informal Garden, Flower borders and beds, Gravel Garden, Ground Cover, Underplanting of Roses and Shrubs or Rock Garden


How to care

Pruning

Remove flowered stems and old leaves to encourage the production of fresh leaves and flowers

Pests

May be damaged by vine weevil larvae, Geranium sawfly larvae, capsid bug or slugs and snails

Diseases

Downy mildew and a virus are occasional problems. Powdery mildew in dry conditions may be troublesome