Origin: South and Middle America
Flower colour: white, orange, yellow, pink, red, bicolor.
Flowering period: July-October
Average plant height: 80 -200 cm
Planting depth to base of bulbs: just deep enough to cover with soil
Spacing between bulbs: 30 cm
Type of bulb: rhizome
Light requirements: sun is essential (full AM sun)
Landscape uses: containers and borders
Canna is a half-hardy summer rhizome. Most often used in pots and containers, they are enjoying a resurgence in popularity as a prime summer garden plant. Here, they are divided into three groups: tall, brown-leafed varieties; tall, green-leafed varieties and dwarf varieties. The blooms are up to 5 inches (12.5 cm) and the leaves are very decorative. Canna will bloom longer if you remove dead flowers.
In warm climate zones Canna is perennial. In other areas the rhizomes should be lifted and stored in sand or peat.
Principal varieties
Green-leafed varieties
- ‘City of Portland’ – pink
- ‘Richard Wallace’ – yellow
- ‘Rosemond Coles’ – red, yellow-edged
- ‘President’ – bright red
Dwarf (50-80cm) green-leafed varieties
- ‘Orchid’ – pink
- ‘Lucifer’ – red
- ‘Primrose Yellow’ – yellow
Brown-leaved varieties
- ‘Roi Humbert’ – orange/red
- ‘Wyoming’ – orange
- ‘Black Knight’ – red
