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Herbaceous Perennial

Geranium nodosum
  • RHS Plants for pollinators

knotted cranesbill

A sprawling perennial with glossy 3-lobed leaves and loose clusters of dark-veined, light pink flowers 2.5cm wide from late spring to early autumn

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Size
Ultimate height
0.1–0.5 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 Pink Green
Summer Pink Green
Autumn Pink Green
Winter
Position
  • Full shade
  • Full sun
  • Partial shade
Aspect

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

Exposure
Exposed or Sheltered
Hardiness
H5
Botanical details
Family
Geraniaceae
Native to GB / Ireland
No
Foliage
Deciduous
Habit
Bushy
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

Correct

Plant range
S Europe

How to grow

Cultivation

Grow in any, moderately fertile soil apart from waterlogged soils. in full sun, partial shade or full shade. Has the potential to become a nuisance if sedlings not managed

Propagation

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

Suggested planting locations and garden types
  • Coastal
  • Cottage and informal garden
  • Wildlife gardens
  • Flower borders and beds
  • Banks and slopes
  • Ground cover
Pruning

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

Pests

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

Diseases

May be subject to powdery mildews, a downy mildew and a virus

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