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Herbaceous Perennial

Brunnera macrophylla 'Jack Frost'PBR
  • RHS AGM

Siberian bugloss 'Jack Frost'

'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

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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.5–1 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Blue Green Grey Silver
Summer Green Grey Silver
Autumn
Winter
Position
  • Full shade
  • Partial shade
Aspect

North–facing or West–facing or East–facing

Exposure
Sheltered
Hardiness
H6
Botanical details
Family
Boraginaceae
Native to the UK
No
Foliage
Deciduous
Habit
Bushy
Genus

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

Name status

Accepted

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How to grow

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

Propagation

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

Suggested planting locations and garden types
  • Cottage and informal garden
  • Underplanting of roses and shrubs
  • Banks and slopes
  • Flower borders and beds
  • Ground cover
Pruning

No pruning required

Pests

Generally pest free

Diseases

Generally disease free

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