About
Conoclinium coelestinum 'Cori' is a robust, compact perennial that grows from rhizomes. It features oval, serrated leaves in a rich dark green. From summer into autumn, this plant produces prominent, feathery blooms in a light blue-purple hue. It thrives in damp to wet environments, making it well-suited for planting near ponds and streams. Without proper management, it can spread aggressively.
About the genus
This genus comprises four species of herbaceous perennial plants that thrive in North America. They feature green leaves and produce flat clusters of soft-textured flowers, which can be found in shades of blue, lavender, or pale pink. These plants are particularly attractive to pollinators.
Growing conditions
- Sunlight
- Full sun, Partial shade
- Soil type
- Chalk, Clay
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained, Poorly-drained
- Aspect
- East-facing, North-facing, South-facing, West-facing
- Exposure
- Sheltered
- UK hardiness
- H4
Plant details
- Plant type
- Herbaceous Perennial
- Habit
- Bushy
- Foliage
- Deciduous
- Height
- 0.5-1 metres
- Spread
- 0.5-1 metres
- Time to full height
- 1-2 years
- Suggested uses
- Cottage and informal garden, Coastal
Care notes
- Cultivation
- Grow in very moist to wet soil in sun or partial shade. Plants may require support. Plants have the potential to become a nuisance if not kept in check, but drier soils will slow growth
- Pruning
- No pruning required
- Propagation
- Propagate by stem cuttings
- Pest resistance
- May be susceptible to leaf miner and aphids
- Disease resistance
- May be susceptible to powdery mildews