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Herbaceous Perennial

Geranium phaeum 'Joseph Green' (d)
  • RHS Plants for pollinators

dusky cranesbill 'Joseph Green'

A compact, deciduous, herbaceous perennial, producing deeply lobed, bright green leaves, on stems to 60cm (24in) high. Double smoky-purple flowers with multiple green stigmas in the centre appear in spring. The flowers are sterile and therefore the plant does not seed around like other Geranium phaeum cultivars. It is also able to tolerate shade, making it a useful addition to the shady border.

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Size
Ultimate height
0.5–1 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained, Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Purple Green
Summer Green
Autumn Green
Winter
Position
  • Full shade
  • Full sun
  • Partial shade
Aspect

South–facing or West–facing or East–facing or North–facing

Exposure
Sheltered
Hardiness
H7
Botanical details
Family
Geraniaceae
Native to the UK
No
Foliage
Deciduous
Habit
Clump forming
Genus

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

Name status

Accepted

How to grow

Cultivation

Grow in moderately fertile, well-drained soil in sun or part shade but most soils (unless waterlogged) are tolerated. Especially good in damp shade

Propagation

Propagate by division in spring or propagate by basal cuttings in early to mid spring and root with bottom heat.

Suggested planting locations and garden types
  • Cottage and informal garden
  • Wildlife gardens
  • City and courtyard gardens
  • Flower borders and beds
  • Underplanting of roses and shrubs
  • Banks and slopes
Pruning

Cut back after flowering to encourage the production of fresh leaves and flowers. Remove old dead foliage in spring before growth commences

Pests

May be susceptible to vine weevil, geranium sawfly, slugs and snails

Diseases

May be susceptible to Powdery mildews, downy mildews and a virus

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