About
Canna 'Erebus' is a perennial that forms clumps, ideal for aquatic and bog settings. It reaches a height of approximately 1.5 meters and features substantial, paddle-shaped grey-green foliage. During the summer and early autumn, it produces flowers resembling irises, showcasing a pale coral-pink hue.
About the genus
Canna are herbaceous perennials characterized by their rhizomatous growth and upright stems. They feature broad, oval leaves and prominent flowers that include petal-like staminodes along with smaller, colored petals and sepals. These blooms appear in clusters, such as racemes or panicles, during the summer and autumn months.
Growing conditions
- Sunlight
- Full sun
- Soil type
- Loam
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Poorly-drained, Moist but well-drained
- Aspect
- South-facing, West-facing
- Exposure
- Sheltered
- UK hardiness
- H3
Plant details
- Plant type
- Conservatory Greenhouse, Herbaceous Perennial, Aquatic, Bogs
- Habit
- Clump forming
- Foliage
- Deciduous
- Height
- 1.5-2.5 metres
- Spread
- 0.1-0.5 metres
- Time to full height
- 2-5 years
- Suggested uses
- City and courtyard gardens, Cottage and informal garden, Patio and container plants, Architectural, Coastal, Sub-tropical
Care notes
- Cultivation
- In summer, water cannas (often bred from Canna glauca) can be placed in containers in ponds with no more than 15cm (6in) of water over the roots. They are also suitable for well-watered borders or conservatories where potted plants can be stood in deep saucers of water. Before autumn frosts, bring plants from outdoors into a frost-free greenhouse or conservatory. Keep the pots moist but not saturated. In April, increase temperatures and plant the sprouted plants out in late May when the risk of frost has passed. See further canna cultivation advice
- Pruning
- Deadhead to promote continued flowering. Leave to die back in autumn
- Propagation
- Propagate by division of rhizomes in early spring
- Pest resistance
- May be susceptible to glasshouse red spider mite, slugs and caterpillars
- Disease resistance
- Canna can be susceptible to canna viruses