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Herbaceous Perennial

Geranium macrorrhizum 'Glacier'
  • RHS Plants for pollinators

A semi-evergreen perennial, to around 30cm high, forming a spreading clump of deeply lobed, aromatic green leaves. Near white flowers, with prominent stamens and pale pink calyces, are produced in early summer

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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 Green
Summer White Pink Green
Autumn Green
Winter Green
Position
  • Full sun
  • Partial shade
  • Full shade
Aspect

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

Exposure
Exposed or Sheltered
Hardiness
H7
Botanical details
Family
Geraniaceae
Native to the UK
No
Foliage
Semi evergreen
Habit
Bushy, 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

Unresolved

How to grow

Cultivation

Thrives in moderately fertile, well-drained soil in full sun or partial shade, but will tolerate most soils unless waterlogged

Propagation

Propagate by division or by basal softwood cuttings in spring

Suggested planting locations and garden types
  • City and courtyard gardens
  • Cottage and informal garden
  • Gravel garden
  • Patio and container plants
  • Wildlife gardens
  • Banks and slopes
  • Flower borders and beds
  • Ground cover
  • Underplanting of roses and shrubs
Pruning

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

Pests

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

Diseases

May be susceptible to downy mildews and virus diseases, and to powdery mildews in dry conditions

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