Skip to site navigation

Crocosmia masoniorum AGM

Home  |  Plants > Plant Selector > Crocosmia masoniorum AGM

© RHS 1998

Characteristics

Plant type

Bulb or Herbaceous Perennial

Habit

Clump-forming

Resilience

Hardiness

H4 (hardy - average winter)

Colour

Flower

Orange and Red in Summer

Foliage

Green in Autumn, Spring and Summer

Size

Ultimate height

1-1.5 metres

Ultimate spread

0.1-0.5 metres

Time to ultimate height

2-5 years


Preferred common name

giant montbretia

Family

Iridaceae


Crocosmia are deciduous cormous perennials with erect, sword-shaped leaves and branched spikes of showy, funnel-shaped flowers in summer

C. masoniorum is a corm forming clumps of narrow leaves and branched sprays of upward-facing, brilliant orange-red flowers 5cm in length, on stems to 1.2m in height, from midsummer

How to grow

Sunlight

  • Part shade

Aspect

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

Cultivation

Plant 8 to 10cm deep in moderately fertile, humus-rich soil. Lift and divide congested clumps to maintain vigour

Soil

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

Propagation

Propagate by seed sown in containers in a cold frame as soon as ripe or by division in early spring as growth begins

Suggested planting locations and garden types

City/Courtyard Gardens, Cottage/Informal Garden, Flower borders and beds, Cut Flowers, Gravel Garden, Low Maintenance, Mediterranean Climate Plants, Prairie Planting or Wall-side Borders


How to care

Pruning

No pruning required

Pests

Generally pest free

Diseases

Generally disease free