About
Corydalis flexuosa 'China Blue' is a rhizomatous perennial known for its mat-forming growth habit and finely divided leaves that exhibit a hint of purple. The foliage typically dies back during the summer months. In late spring to early summer, this plant produces clusters of light blue, two-lipped flowers, each measuring approximately 2.5 cm in length, supported on leafy stems that can reach heights of up to 30 cm.
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
- South-facing, East-facing, West-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H5
Plant details
- Plant type
- Alpine Rockery, Herbaceous Perennial
- Habit
- Matforming
- Foliage
- Deciduous
- Height
- 0.1-0.5 metres
- Spread
- 0.1-0.5 metres
- Time to full height
- 2-5 years
- Suggested uses
- Rock garden, City and courtyard gardens, Cottage and informal garden, Patio and container plants
Care notes
- Cultivation
- Grow in moderately fertile, humus-rich soil
- Pruning
- No pruning required
- Propagation
- Propagate by seed sown in containers in an open frame when ripe or by division in autumn
- Pest resistance
- May be susceptible to slugs and snails
- Disease resistance
- Generally disease-free