Canna 'Sémaphore'

Canna 'Sémaphore'

Photo/Illustration: 
Scott Kunst
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(Canna 'Sémaphore')
KAN-ah
Genus:  Canna
Growing to 6 or 7 feet, 'Sémaphore' features slender, dark-bronze leaves topped by spikes of narrow-petaled flowers of an unusual glowing color that's not quite yellow and not quite orange; perhaps flickering tongues of flame would be the best description. It is a Victorian classic from 1895.
Noteworthy Characteristics:  Dark-bronze leaves, glowing flowers. Heirloom.
Care:  Fertile soil, full sun. Water freely in dry weather and deadhead regularly. Where not hardy, lift after frost in autumn and store in a frost-free location in barely damp peat or leaf mold. In a greenhouse, cannas need full light with shade from hot sun. Water freely and fertilize during the growth stage.
Propagation:  To aid in sprouting, chip seeds or soak in warm water for 24 hours, and then sow at 70°F in spring or autumn. Divide in spring, and then pot up at 61°F, wateringly lightly at first.
Problems:  Slugs, snails, spider mites, and caterpillars may be problematic, while rust, fungal leaf spot, and bacterial blight are common. Bean yellow mosaic and tomato spotted wilt viruses can occur.

Overview

Height
3 ft. to 6 ft.
Growth Habit
Clumps
Growth Pace
Moderate Grower
Light
Full Sun Only
Moisture
Medium Moisture
Maintenance
Moderate
Characteristics
Attracts Hummingbirds,
Showy Flowers,
Showy Foliage
Bloom Time
Summer
Flower Color
Orange/Salmon Flower
Foliage Color
Colorful/Burgundy Foliage
Uses
Beds and Borders,
Container,
Specimen Plant/Focal Point
Style
Formal Garden
Seasonal Interest
Summer Interest
Type
Perennials

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