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Brunnera macrophylla Jack Frost - Siberian Bugloss

Brunnera macrophylla Jack Frost
Siberian bugloss, Great Forget-me-not

4,5/5
44 reviews
2 reviews
2 reviews
3 reviews
3 reviews

Naked jack frost shoot received today, young plant tiny hoping it will grow.

Vincent, 17/05/2023

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This plant carries a 12 months recovery warranty

More information

Graden Merit Value-for-money
Brunnera macrophylla Jack Frost, a groundcover with blue flowers.
Height at maturity
50 cm
Spread at maturity
40 cm
Exposure
Partial shade, Shade
Hardiness
Hardy down to -34°C
Soil moisture
Moist soil
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Recommended planting time February to April, September to November
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Flowering time May to June
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Description

Brunnera macrophylla Jack Frost or Great Forget-Me-Not is a perennial that grows in the forests of Eastern Europe and Northwestern Asia. It is cultivated for its delicate flowers that resemble forget-me-nots and its groundcover habit that forms a thick carpet of deciduous foliage. In May-June, magnificent blue flowers appear and are arranged in paniculate clusters (conical-shaped clusters) that are at least 20 cm (8in) long.

The foliage of the Siberian bugloss is green with silver veins and prominently marked with cream white.  Leaves are lanceolate to ovate in shape. The heart-shaped leaves measure up to 15 cm (6in) long and have soft hairs. They are highly decorative in pots and in the garden. Brunnera reaches a height of 50 cm (20in) at maturity. This perennial has spring interest and is very hardy ,at least down to -20°C (1°F).

Brunnera macrophylla Jack Frost thrives in the coolness of partial shade. It is a good border plant and is well-suited for wild gardens or perennial flower beds with a more relaxed appearance. It pairs well with spring-blooming bulb flowers and other perennials. Ideal for mixing with tulips.

Brunnera macrophylla Jack Frost - Siberian Bugloss in pictures

Brunnera macrophylla Jack Frost - Siberian Bugloss (Flowering) Flowering
Brunnera macrophylla Jack Frost - Siberian Bugloss (Foliage) Foliage
Brunnera macrophylla Jack Frost - Siberian Bugloss (Plant habit) Plant habit

Flowering

Flower colour blue
Flowering time May to June

Foliage

Foliage persistence Deciduous
Foliage colour grey or silver

Plant habit

Height at maturity 50 cm
Spread at maturity 40 cm
Growth rate normal

Botanical data

Genus

Brunnera

Species

macrophylla

Cultivar

Jack Frost

Family

Boraginaceae

Other common names

Siberian bugloss, Great Forget-me-not

Origin

Cultivar or hybrid

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Planting and care

Plant Brunnera macrophylla Jack Frost in a damp and humus-rich and well-drained soil. Position it in shade or partial shade, avoiding excessive exposure to sunlight.

Planting period

Recommended planting time February to April, September to November

Intended location

Suitable for Shaded rockery, Woodland edge, Undergrowth
Type of use Border, Container
Hardiness Hardy down to -34°C (USDA zone 4) Show map
Ease of cultivation Amateur
Planting density 5 per m2
Exposure Partial shade, Shade
Soil pH Acidic, Neutral
Soil type Clayey (heavy), Silty-loamy (rich and light)
Soil moisture Moist soil, Rich in humus

Care

Pruning instructions Prune sun-scorched, damaged leaves for in mid-summer to regenerate the young foliage and mulch at the base.
Pruning Pruning recommended once a year
Pruning time July to August
Overwinter Can be left in the ground
4,5/5

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