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Corydalis flexuosa ‘China Blue’ in full bloom — specialist nursery plant, Middleton Nurseries
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Corydalis flexuosa ‘Porcelain Blue’

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Plant information

  • Colour: Blue
  • Height: 70cm-80cm
  • Spread: 60cm-70cm
  • Soil: Can tolerate moderately poor soils, but avoid heavy clay that holds water
  • Position: Full Sun, Part Shade
  • Flowering Period: Summer to Autumn
  • Hardiness: Frost Hardy to -12°C (H5)

Plant Description

Corydalis flexuosa ‘Porcelain Blue’ has pale olive-green foliage and pale blue flower which blooms from spring to mid-summer. Perfect for lovely ground cover between shrubs. Hardy so will only need protection should we have very severe frost. Breed in China

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🌿 How to Care for Corydalis flexuosa ‘Porcelain Blue’

How much sun do Corydalis flexuosa ‘Porcelain Blue’ need?
Corydalis flexuosa ‘Porcelain Blue’ thrives in full sun—around six hours a day. While it can tolerate light shade, you’ll get the best flowering in bright, open spots.
Corydalis flexuosa ‘Porcelain Blue’ prefers well-drained soil, ideally sandy or chalky. Rich or heavy soils can cause the plant to flop and reduce flower production.
Water well during the first growing season to help it establish. Once settled, Corydalis flexuosa ‘Porcelain Blue’ is drought-tolerant and rarely needs extra water unless it’s extremely dry.
Corydalis flexuosa ‘Porcelain Blue’ doesn’t require much at all. In fact, too much fertiliser—especially nitrogen—can lead to more leaves and fewer flowers. A light feed in spring is plenty, if needed.
Yes—regularly remove faded flowers from Corydalis flexuosa ‘Porcelain Blue’ to encourage more blooms and stop self-seeding. You can cut the plant back in autumn or early spring to tidy it up and boost new growth.
Divide Corydalis flexuosa ‘Porcelain Blue’ into clumps every 3 to 5 years in spring or autumn to keep them healthy and vigorous. You can also take soft cuttings in spring.
Yes, Corydalis flexuosa ‘Porcelain Blue’is drought handy. Once it’s established, it copes brilliantly in dry conditions, making it perfect for sunny borders and gravel gardens.
Corydalis flexuosa ‘Porcelain Blue’ is generally low-maintenance, but it can occasionally suffer from aphids or powdery mildew—especially in humid or overcrowded spots. Good airflow and spacing usually prevent problems.

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