Brunnera Macrophylla 'Jack Frost'

Jack Frost Bugloss, Siberian Bugloss

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

Branding / horticultural information
Botanical name: Brunnera macrophylla ‘Jack Frost’
Common name: Jack Frost Siberian Bugloss
Plant group: Shade perennial
Awards: Perennial Plant of the Year® (2012)
Market use: Premium foliage perennial for brightening shade gardens

Plant type

Perennial

Height

12-18''

Width

18"

Hardiness zones

3–8

Sunlight

Full Shade, Partial Shade

Growth rate

Moderate

Bloom time

Early Summer, Late Spring, Spring

Flower color

Blue

Fall color

Dark Green, Silver, White

Soil

Loamy

Landscape use

Container, Groundcover, Specimen

Shape

Clump

Deer resistant

Yes

Drought tolerant

No