About
Corydalis 'Craigton Blue' is a herbaceous perennial with a rhizomatous growth habit. Its finely divided, mid-green foliage recedes in the summer months. In late spring and early summer, it produces clusters of tubular flowers that are bright blue and measure approximately 4 cm in length. These blooms are borne on red stems that can reach heights of up to 40 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, West-facing, East-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
- City and courtyard gardens, Rock garden, Cottage and informal garden, Patio and container plants
- Fragrance
- Flower
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 (cultivars may not come true) or by division in autumn
- Pest resistance
- May be susceptible to slugs and snails
- Disease resistance
- Generally disease-free