Canna 'Picasso'
canna 'Picasso'
Fairly compact, clump-forming perennial about 1.2m tall, with large, broad, green or bluish-green leaves, and showy yellow flowers boldly spotted with red, appearing from midsummer to early autumn
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Size
Ultimate height
1–1.5 metresTime to ultimate height
2–5 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Blue Green | |||
|---|---|---|---|---|
| Summer | Red Yellow | Blue Green | ||
| Autumn | Red Yellow | Blue Green | ||
| Winter |
Position
- Full sun
Aspect
West–facing or South–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 division of rhizomes in early spring
Suggested planting locations and garden types
- Architectural
- City and courtyard gardens
- Coastal
- Cottage and informal garden
- Patio and container plants
- 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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