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Herbaceous Perennial

Brunnera macrophylla 'Sea Heart'^PBR

Siberian bugloss 'Sea Heart'

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.

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Ultimate height

0.1–0.5 metres

Time to ultimate height

2–5 years

Ultimate spread

0.1–0.5 metres

Chalk

Clay

Loam

Moisture

Moist but well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full shade
Full sun
Partial shade

Aspect

North–facing or South–facing or East–facing or West–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)

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

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