Canna King Humbert (orange-red)
canna 'Roi Humbert'
Clump-forming perennial about 1.5-1.8m tall with broad, glossy, rich, dark bronze leaves and stems flushed with purple. Bright red flowers with an orange throat and markings, appear from midsummer to mid-autumn
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Size
Ultimate height
1.5–2.5 metresTime to ultimate height
2–5 yearsUltimate spread
0.5–1 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Bronze | |||
|---|---|---|---|---|
| Summer | Red Orange | Bronze | ||
| Autumn | Red Orange | Bronze | ||
| Winter |
Position
- Full sun
Aspect
South–facing or West–facing
Exposure
Sheltered Hardiness
H3Botanical details
- Family
- Cannaceae
- Native to GB / Ireland
- 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
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 the rhizomes in spring
Suggested planting locations and garden types
- Architectural
- City and courtyard gardens
- Coastal
- Cottage and informal garden
- Patio and container plants
- Sub-tropical
- Bedding
- Conservatory and greenhouse
- Flower borders and beds
Pruning
No pruning required but deadhead to promote continued flowering
Pests
May be susceptible to glasshouse red spider mite, aphids, slugs and snails
Diseases
May be susceptible to canna viruses
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