Brunnera macrophylla 'Sea Heart'PBR

RHS Plant Profile
Siberian bugloss 'Sea Heart'
Plants for pollinators
Herbaceous Perennial

Has bright green veining through frosted silver heart-shaped leaves, which are creamier when young, delicate sprays of 5-petaled, blue flowers. A mutation of Brunnera 'Silver Lace'. Good for ground cover.

Position

Full shade, Full sun, Partial shade

Soil Types

Chalk, Clay, Loam

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

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

Growing Conditions

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

Position

Full shade Full sun Partial shade
Aspect
North–facing or South–facing or East–facing or West–facing
Exposure
Sheltered
Hardiness
H5

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Boraginaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Clump forming
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

How to Grow

Cultivation

Best cultivated in full or dappled shade, woodland conditions which do not dry out, though this cultivar may have a greater tolerance than some other cultivars such as 'Jack Frost' for heat and humidity. In full sun keep soil moist.

Propagation

Propagate from roots in spring

Suggested planting locations and garden types

  • City and courtyard gardens
  • Cottage and informal garden
  • Ground cover

Pruning

Older leaves can be cut back in spring and during growing season to encourage new growth. Leave the plant to age in autumn to protect the crown. If overcrowded after a few years dig up carefully with a fork, tease out roots and select heathiest clumps for replanting.

Pests

May be susceptible to slugs and snails in damp conditions

Diseases

Generally disease-free