Corydalis flexuosa 'Porcelain Blue'PBR

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<em>Corydalis</em> <em>flexuosa</em> 'Porcelain Blue'<sup>PBR</sup> visionspictures.com
<em>Corydalis</em> <em>flexuosa</em> 'Porcelain Blue'<sup>PBR</sup> RHS

Synonyms

Corydalis 'Porcelain Blue'

Herbaceous Perennial Alpine Rockery
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A bushy perennial with more or less evergreen, bronze -tinted, blue-green, ferny foliage. Clusters of narrowly tubular, light electric blue flowers are produced in spring and again in summer into autumn

Position

Partial shade

Soil Types

Loam

Max Height

0.1-0.5 metres

Max Spread

4-8 metres

Size

Time to Maturity
2–5 years
Max Spread
4-8 metres
Max Height
0.1-0.5 metres

Growing Conditions

Loam
Moisture
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Partial shade
Aspect
East–facing
Exposure
Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

  • H1A: under glass all year (>15C)
  • H1B: can be grown outside in the summer (10 - 15)
  • H1C: can be grown outside in the summer (5 - 10)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
  • H4: hardy through most of the UK (-10 to -5)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
  • H6: hardy in all of UK and northern Europe (-20 to -15)
  • H7: hardy in the severest European continental climates (< -20)
H5

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Papaveraceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Bushy, Clump forming
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 humus-rich, moist but well-drained soil in partial shade

Propagation

Propagate by division in autumn

Suggested planting locations and garden types

  • Cottage and informal garden
  • Patio and container plants
  • Rock garden
  • Flower borders and beds
  • Underplanting of roses and shrubs
  • Wall side borders

Pruning

No pruning required

Pests

Generally pest-free, although may be susceptible to slugs and snails

Diseases

Generally disease-free