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Crocosmia masoniorum 'Rowallane Yellow' AGM

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© RHS

Characteristics

Plant type

Herbaceous Perennial

Habit

Bushy

Resilience

Hardiness

H4 (hardy - average winter)

Colour

Flower

Yellow in Summer

Foliage

Green in Autumn, Spring and Summer

Size

Ultimate height

0.5-1 metres

Ultimate spread

0.1-0.5 metres

Time to ultimate height

2-5 years


Preferred common name

giant montbretia 'Rowallane Yellow'

Family

Iridaceae


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

'Rowallane Yellow' is an erect herbaceous perennial to 80cm, with narrowly sword-shaped leaves and sprays of bright chrome yellow flowers in summer

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 division in early spring as growth begins

Suggested planting locations and garden types

Banks and Slopes, City/Courtyard Gardens, Coastal, Cottage/Informal Garden or Flower borders and beds


How to care

Pruning

No pruning required

Pests

Generally pest free

Diseases

Generally disease free