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Geranium × oxonianum 'A.T. Johnson' AGM

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© RHS 1999

Characteristics

Plant type

Herbaceous Perennial

Habit

Trailing

Resilience

Hardiness

H7 (very hardy)

Colour

Flower

Pale Pink in Autumn and Summer

Foliage

Green in Autumn, Spring and Summer

Size

Ultimate height

0.1-0.5 metres

Ultimate spread

0.5-1 metres

Time to ultimate height

2-5 years


Preferred common name

geranium 'A.T. Johnson'

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

'A.T. Johnson' is a clump-forming evergreen perennial to 30cm in height, with mid-green leaves divided into 5 lobes. Pale silvery-pink flowers 3.5cm in width are borne freely over a long period from early summer

How to grow

Sunlight

  • Full sun
  • Part shade

Aspect

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

Cultivation

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

Soil

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

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


How to care

Pruning

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

Pests

May get vine weevil, capsid bug and sawflies

Diseases

May be affected by a downy mildew and powdery mildews