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Herbaceous PerennialConservatory GreenhouseBogsAquatic

Canna 'Endeavour'

water canna

Slender, erect, rhizomatous perennial to 1.5m tall or more, forming clumps of large, grey-green leaves. Sprays of iris-like, soft pinky-red flowers are produced from mid-summer to early autumn, on tall upright stems

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Size
Ultimate height
1.5–2.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Loam
Moisture
Moist but well–drained, Poorly–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Grey Silver Green
Summer Red Grey Silver Green
Autumn Red Grey Silver Green
Winter
Position
  • Full sun
Aspect

West–facing or South–facing

Exposure
Sheltered
Hardiness
H3
Botanical details
Family
Cannaceae
Native to the UK
No
Foliage
Deciduous
Habit
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

How to grow

Cultivation

In summer, water cannas (often bred from Canna glauca) can be placed in containers in ponds with no more than 15cm (6in) of water over the roots. They are also suitable for well-watered borders or conservatories where potted plants can be stood in deep saucers of water. Before autumn frosts, bring plants from outdoors into a frost-free greenhouse or conservatory. Keep the pots moist but not saturated. In April, increase temperatures and plant the sprouted plants out in late May when the risk of frost has passed. See further canna cultivation advice

Propagation

Propagate by division of rhizomes in early spring

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

Remove dead flowers individually to promote continued flowering. Leave to die back in autumn

Pests

Maybe susceptible to glasshouse red spider mite, slugs and caterpillars

Diseases

May be affected by canna viruses

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