Brunnera macrophylla Jack Frost

Jack Frost False Forget-Me-Not

Brunnera macrophylla ‘Jack Frost’ — commonly known as Jack Frost Siberian Bugloss — is a standout shade perennial celebrated for its silvery foliage with bold green veining and clouds of bright blue, forget-me-not–like flowers in spring. The striking leaves provide season-long interest and brighten shady gardens long after bloom.

Key features
Width / spread: 1.5–2 ft
Height: 12–18 in (flower stems may reach ~18–20 in)
Flower color: Clear sky blue
Bloom time: Early to mid spring
Foliage: Silver with prominent green veins; heart-shaped
Form: Clumping, mounded perennial
Life cycle: Herbaceous perennial

Growing conditions
Sun: Part shade to full shade (tolerates morning sun; avoid hot afternoon sun)
Soil: Moist, well-drained; rich in organic matter
Water: Moderate; consistent moisture preferred
Hardiness:



Zone Low: 3a



Zone High: 8b



Landscape use
Woodland and shade gardens
Perennial borders
Underplanting for trees and shrubs
Groundcover accents in shade
Containers for shaded patios

Notes
One of the most popular Brunnera cultivars for foliage impact
Foliage remains attractive through summer with adequate moisture
Excellent contrast with hostas, ferns, and hellebores
Generally deer and rabbit resistant
Divide in early spring if needed

Plant type

Perennial

Height

12-18''

Width

12-15"

Hardiness zones

3–7

Sunlight

Full Shade, Partial Shade

Growth rate

Moderate

Bloom time

Late Spring, Summer

Flower color

Blue

Soil

Loamy

Shape

Clumping, Low Mounding

Deer resistant

Yes

Drought tolerant

No