• AGM plants

    AGM plants have been through a rigourous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Geranium 'Johnson's Blue'

Geranium 'Johnson's Blue'

Geranium 'Johnson's Blue'

© � RHS 2002

  • Other common names Geranium 'Johnson's Blue'

  • 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

  • Family Geraniaceae / Geraniaceae

  • Species 'Johnson's Blue' is a clump-forming rhizomatous perennial to 30cm, with deeply lobed leaves and long-stalked flowers 5cm in width, with rounded, dark-veined, lavender-blue petals

Characteristics

  • Foliage Deciduous

  • Habit Clump-forming

Colour

Sunlight

  • Full Sun

  • Partial Shade

  • Aspect South-facing or East-facing or West-facing or North-facing

  • Exposure Exposed or Sheltered

Soil

  • Chalk

    Sand

  • Chalk

    Loam

  • Chalk

    Chalk

  • Chalk

    Clay

  • MoistureMoist but well-drained, Well-drained

  • SoilSand, Loam, Chalk, Clay

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height

    0.1-0.5 metres

  • Ultimate spread

    0.5-1 metres

  • Time to ultimate height

    2-5 years

How to grow

Cultivation Grow in any, moderately fertile soil apart from waterlogged soils. Full sun or partial shade is best but shade is tolerated

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 Flower borders and beds Ground Cover Underplanting of Roses and Shrubs Low Maintenance Cottage & Informal Garden

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