Perennials

Brunnera macrophylla 'Jack Frost'

Jack Frost Siberian bugloss

Also known as: Heartleaf brunnera

Jack Frost brunnera at a botanical garden. cultivar photograph

Silver-coated, heart-shaped leaves retain a network of green veins. Clusters of small blue flowers add spring color above the foliage. Grow in rich, moisture-retentive soil with drainage.

At a glance

Sun: Part shade to full shade
Mature size: 12–15 in. tall × 12–15 in. wide
Water: Consistent moisture
Hardiness: USDA zones 3–8
Bloom: Blue; mid–late spring.

Sizes & prices

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Catalog updated September 8, 2026. This is not a live stock count; please call to confirm availability and price.

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Resistance & tolerances

Deer: Resistant, not browse-proof.
Drought: Needs consistent moisture.
Wet soil: Moist soil preferred; avoid prolonged waterlogging.

Resistance is not a guarantee; deer and rabbits may browse any plant.

Pollinators & wildlife

Attracts: Bees

Growing & care

Sun: Morning sun is suitable if the soil stays moist; avoid hot afternoon exposure.
Cleanup: Remove old leaves in spring, not fall, to help protect the crown.
Maintenance: No routine pruning required.

Sources & photo credits

Walters Gardens

Royal Horticultural Society

Photo: Krzysztof Ziarnek, Kenraiz · CC BY-SA 4.0

Image notes: Jack Frost brunnera at a botanical garden. cultivar photograph; uncropped.

Reviewed September 19, 2026. Growing conditions vary by location.