About
Corydalis Blue Line ('Couriblue') is a deciduous perennial that reaches heights of up to 50 cm, creating a dense mound of finely dissected, bluish-green leaves. Its upright, reddish stems produce tubular blue flowers with white interiors, which bloom profusely from spring through autumn.
About the genus
Corydalis includes annuals, biennials, and perennials that can be either tuberous or rhizomatous. The plants feature leaves that are either ternately or pinnately lobed, and they produce racemes adorned with spurred, tubular flowers.
Growing conditions
- Sunlight
- Partial shade
- Soil type
- Chalk, Clay, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- East-facing, North-facing, West-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H5
Plant details
- Plant type
- Herbaceous Perennial
- Habit
- Clump forming
- Foliage
- Deciduous
- Height
- 0.1-0.5 metres
- Spread
- 0.5-1 metres
- Time to full height
- 2-5 years
- Suggested uses
- Cottage and informal garden, Patio and container plants, Rock garden
- Fragrance
- Flower
Care notes
- Cultivation
- Grow in moderately fertile, moist but well-drained, humus-rich soil in partial shade
- Pruning
- No pruning required
- Propagation
- Propagate by division
- Pest resistance
- Generally pest-free but slugs and snails may damage young growth
- Disease resistance
- Generally disease-free