Skip to site navigation

Geranium maderense AGM

Home  |  Plants > Plant Selector > Geranium maderense AGM

© Janet Cubey & Wolfgang Bopp 2000

Characteristics

Plant type

Conservatory/Greenhouse or Herbaceous Perennial

Habit

Tufted

Resilience

Hardiness

H3 (half hardy - unheated greenhouse/mild winter)

Colour

Flower

Dark Pink in Spring, Summer and Winter

Foliage

Green in Autumn, Spring, Summer and Winter

Stem

Dark Red in Autumn, Spring, Summer and Winter

Size

Ultimate height

1-1.5 metres

Ultimate spread

0.5-1 metres

Time to ultimate height

1-2 years


Preferred common name

giant herb robert

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

G. maderense is a robust but short-lived evergreen perennial or biennial to 1.5m, with attractively dissected leaves to 20cm in length and large panicles of purplish-pink flowers 4cm across, with darker centres

How to grow

Sunlight

  • Full sun
  • Part shade
  • Full shade

Aspect

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

Cultivation

Grow outdoors in well-drained soil in either sun or shade in frost-free area. Grow under glass in loam-based compost with added sharp sand in bright filtered light. Remove flowered stems and old leaves to encourage the production of new leaves and flowers

Soil

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

Propagation

Propagate by seed, division or take basal cuttings

Suggested planting locations and garden types

Cottage/Informal Garden, Low Maintenance or Mediterranean Climate Plants


How to care

Pruning

No pruning required

Pests

Generally pest free

Diseases

May be affected by a downy mildew and powdery mildews