Overview
Corydalis 'Korn's Purple' is a clump forming herbaceous perennial in the genus Corydalis, part of the Papaveraceae family, with deciduous foliage. It typically grows around 0.1-0.5 metres tall and 0.1-0.5 metres wide, reaching full size in around 2-5 years. Corydalis 'Korn's Purple' grows best in partial shade, and tolerates loam and sand soils and acid and neutral pH. Its UK hardiness is rated H5. Suggested uses include city and courtyard gardens, cottage and informal garden and rock garden.
About
Corydalis 'Korn's Purple' is a herbaceous perennial that reaches a height of 50 cm. It features delicately divided green foliage and produces racemes of flowers, showcasing deep violet-blue outer petals complemented by white inner petals, blooming in early summer.
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
Best soil and position for Corydalis
- Sunlight
- Partial shade
- Soil type
- Loam, Sand
- Soil pH
- Acid, Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- South-facing, East-facing, North-facing, West-facing
- Exposure
- Sheltered
- UK hardiness
- H5
Plant details
Corydalis 'Korn's Purple' size, habit and characteristics
- Plant type
- Herbaceous Perennial
- Habit
- Clump forming
- 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, Cottage and informal garden, Rock garden
Care notes
Pruning and caring for Corydalis 'Korn's Purple'
- Cultivation
- Grow in neutral to slightly acidic, moderately fertile, humus-rich, moisture-retentive but well-drained soil, in partial shade
- Pruning
- No pruning required
- Propagation
- Propagate by division in spring
- Pest resistance
- May be susceptible to slugs and snails
- Disease resistance
- Generally disease-free
Frequently asked questions
How do I grow Corydalis 'Korn's Purple'?
Grow in neutral to slightly acidic, moderately fertile, humus-rich, moisture-retentive but well-drained soil, in partial shade.
Where is the best place to plant Corydalis 'Korn's Purple'?
Corydalis 'Korn's Purple' prefers partial shade. It suits sheltered positions.
What soil does Corydalis 'Korn's Purple' need?
Corydalis 'Korn's Purple' grows best in loam and sand soil. It prefers acid and neutral soil. Aim for soil that stays moist but well-drained.
How do I prune Corydalis 'Korn's Purple'?
No pruning required.
How big does Corydalis 'Korn's Purple' grow?
Corydalis 'Korn's Purple' reaches a height of 0.1-0.5 metres and a spread of 0.1-0.5 metres. It takes around 2-5 years to reach full size.
Is Corydalis 'Korn's Purple' hardy in the UK?
Corydalis 'Korn's Purple' has a UK hardiness rating of H5.
How do I propagate Corydalis 'Korn's Purple'?
Propagate by division in spring.