Canna 'Roi Soleil'
canna 'Roi Soleil'
Clump-forming perennial to about 1.5m tall with large, broad, glossy dark green leaves, and purplish stems. Large, frilly, bright red flowers marked with yellow in the throat are produced from midsummer to autumn
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Size
Ultimate height
1–1.5 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 | Green | |||
|---|---|---|---|---|
| Summer | Red Yellow | Green | ||
| Autumn | Red Yellow | Green | ||
| Winter |
Position
- Full sun
Aspect
South–facing or West–facing
Exposure
Sheltered Hardiness
H3Botanical details
- Family
- Cannaceae
- Native to the UK
- 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
How to grow
Cultivation
As a patio plant grow in pots of loamless 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 seed at 21°C (70°F) in spring or autumn. Soak seed in warm water before sowing. Propagate by division in early spring
Suggested planting locations and garden types
- Architectural
- City and courtyard gardens
- Patio and container plants
- 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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