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Brunnera macrophylla 'Jack Frost' PBR AGM

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© RHS

Characteristics

Plant type

Herbaceous Perennial

Habit

Bushy

Resilience

Hardiness

H6 (hardy - very cold winter)

Colour

Flower

Blue in Spring

Foliage

Green and Grey/Silver in Spring and Summer

Size

Ultimate height

0.1-0.5 metres

Ultimate spread

0.5-1 metres

Time to ultimate height

2-5 years


Preferred common name

Siberian bugloss 'Jack Frost'

Family

Boraginaceae


Brunnera are rhizomatous herbaceous perennials with large, ovate or heart-shaped basal leaves and sprays of small bright blue flowers in spring

'Jack Frost' is a perennial grown for its large, heart-shaped silver leaves edged and veined with green, and sprays of small blue flowers in spring

How to grow

Sunlight

  • Part shade
  • Full shade

Aspect

  • North-facing, West-facing or East-facing
  • Sheltered

Cultivation

Best grown in moderately fertile, humus-rich soil that is moist but well-drained. A cool site in partial shade or shade is preferred

Soil

  • Moist but well-drained
  • Acid, Alkaline or Neutral
  • Sand, Clay, Chalk or Loam

Propagation

Propagate by division in early spring or take root cuttings in winter

Suggested planting locations and garden types

Banks and Slopes, Cottage/Informal Garden, Flower borders and beds, Underplanting of Roses and Shrubs or Ground Cover


How to care

Pruning

No pruning required

Pests

Generally pest free

Diseases

Generally disease free