Canna 'Sémaphore' Canna 'Sémaphore' Photo/Illustration: Scott Kunst 1 2 3 4 5 6 7 8 9 10 11 (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 Related Plants to Canna 'Sémaphore' 1 2 3 4 5 6 7 8 9 10 11 Canna 'Madame Paul Caseneuve' 1 2 3 4 5 6 7 8 9 10 11 Indian shot Canna 'Centenaire de Rozain-Bourcharlat' 1 2 3 4 5 6 7 8 9 10 11 Angelica Angelica pachycarpa 1 2 3 4 5 6 7 8 9 10 11 Vesper iris Pardanthopsis dichotoma View the discussion thread.