Skip to site navigation

Canna 'Shenandoah' AGM

Home  |  Plants > Plant Selector > Canna 'Shenandoah' AGM

© RHS 1999

Characteristics

Plant type

Conservatory/Greenhouse or Herbaceous Perennial

Habit

Bushy

Resilience

Hardiness

H3 (half hardy - unheated greenhouse/mild winter)

Colour

Flower

Dark Pink in Summer
Pink in Autumn

Foliage

Bronze and Green in Autumn 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

canna 'Shenandoah'

Family

Cannaceae


Canna are rhizomatous herbaceous perennials with erect stems bearing ovate leaves, with showy flowers with showy petal-like staminodes and small, coloured petals and sepals, borne in racemes or panicles in summer and autumn

'Shenandoah' is a clump-forming plant with bronze-tinged, olive green leaves and deep flesh-pink flowers in summer and early autumn

How to grow

Sunlight

  • Full sun

Aspect

  • South-facing or West-facing
  • Sheltered

Cultivation

Outdoors grow in a sheltered site in fertile soil in full sun, planting in early summer once frosts have passed. Water freely in dry weather and apply a high potassium fertiliser monthly. Lift the rhizomes in autumn when frost blackens the foliage. Store over winter in barely moist peat-free potting mix or leaf mould in frost-free conditions. In mild areas leave in the ground but cover with a dry mulch. Further canna cultivation advice

Soil

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

Propagation

Propagate by seed at 21°C (70°F) in spring or autumn. Soak seed in warm water before sowing. Cultivars may not come true from seed. Propagate by division in early spring

Suggested planting locations and garden types

Architectural, City/Courtyard Gardens, Coastal, Cottage/Informal Garden, Flower borders and beds or Patio/Container Plants


How to care

Pruning

Deadhead to promote continued flowering. Leave to dieback in autumn

Pests

Glasshouse red spider mite, slugs and caterpillars may be troublesome

Diseases

Canna can be susceptible to a virus