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Alpine RockeryHerbaceous Perennial

Corydalis flexuosa 'China Blue'

corydalis 'China Blue'

'China Blue' is a rhizomatous perennial forming a mat of divided, purple-tinged leaves that die down in summer, wth 2-lipped light blue flowers 2.5cm long in clusters of leafy stems to 30cm tall, in late spring and early summer

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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Blue Green Purple
Summer Blue Green Purple
Autumn
Winter
Position
  • Partial shade
Aspect

South–facing or East–facing or West–facing

Exposure
Exposed or Sheltered
Hardiness
H5
Botanical details
Family
Papaveraceae
Native to the UK
No
Foliage
Deciduous
Habit
Matforming
Genus

Corydalis can be annuals, biennials or tuberous or rhizomatous perennials, with ternately or pinnately lobed leaves and racemes of spurred, tubular flowers

Name status

Accepted

How to grow

Cultivation

Grow in moderately fertile, humus-rich soil

Propagation

Propagate by seed sown in containers in an open frame when ripe or by division in autumn

Suggested planting locations and garden types
  • Rock garden
  • City and courtyard gardens
  • Cottage and informal garden
  • Patio and container plants
  • Flower borders and beds
  • Ground cover
  • Underplanting of roses and shrubs
Pruning

No pruning required

Pests

May be susceptible to slugs and snails

Diseases

Generally disease-free

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