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Herbaceous PerennialConservatory Greenhouse

Canna 'Shenandoah'

canna 'Shenandoah'

Clump-forming perennial to about 1.5m tall, with large, paddle-shaped, bronze-red leaves, and bearing shapely, deep pink flowers, almost ruby in the centre, in summer and early autumn

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© RHS 1999
© RHS 1999
© RHS 1999
© RHS 1999
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Size
Ultimate height
1–1.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Loam
Sand
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Bronze Red
Summer Pink Bronze Red
Autumn Pink Bronze Red
Winter
Position
  • Full sun
Aspect

South–facing or West–facing

Exposure
Sheltered
Hardiness
H3
Botanical details
Family
Cannaceae
Native to GB / Ireland
No
Foliage
Deciduous
Habit
Bushy, Clump forming
Genus

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

Name status

Accepted

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How to grow

Cultivation

As a patio plant grow in pots of peat-free compost in a sheltered site in full sun. Plants can also be planted into a sunny border. Water freely and apply a high potassium feed every 2-3 weeks in the growing season. Lift the rhizomes in autumn when frost blackens the foliage. Store over winter in barely moist compost in frost-free conditions. See canna cultivation for further information

Propagation

Propagate by division of rhizomes in early spring

Suggested planting locations and garden types
  • Architectural
  • Patio and container plants
  • City and courtyard gardens
  • Coastal
  • Cottage and informal garden
  • Sub-tropical
  • Flower borders and beds
  • Bedding
  • Conservatory and greenhouse
Pruning

Deadhead to promote continued flowering. Leave to dieback in autumn

Pests

May be susceptible to aphids, glasshouse red spider mite, slugs and snails and caterpillars

Diseases

May be susceptible to canna viruses

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