
Brunnera macrophylla ‘Jack Frost’
$38.99
Brunnera macrophylla Jack Frost forms luminous shade-loving mounds of silver heart-shaped leaves traced with green veins and airy blue spring flowers.
- Description
- Additional information
Description
Brunnera macrophylla Jack Frost is a deciduous herbaceous perennial prized for large heart-shaped leaves frosted silver-white except for narrow green veins and a crisp green rim. Airy paniculate cymes carry tiny sky-blue, five-lobed flowers above the foliage in mid-spring.
Slowly spreading clumps reach about 10-50 cm tall and 50-100 cm wide, creating durable texture for woodland borders, shaded paths, underplanting, and ground cover.
Grow it in cool partial or full shade in humus-rich, moist but well-drained soil. Water during dry spells, avoid both drought and waterlogged crowns, mulch lightly, and remove tired foliage when new growth begins in spring.
Additional information
| Height | 5 in – 2 ft |
|---|---|
| Spread | 2 ft – 3 ft |
| Flowering months | April, May |
| Synonyms | Brunnera macrophylla 'Jack Frost' |
| Family | Boraginaceae |
| Hazardous | unknown |
| Variegated | yes |
| Color flower spring | Blue |
| Aspect | East, West, North |
| Foliage | Deciduous |
| Habit | Clump-former |
| Moisture | Moist but Well Drained |
| Ph | Acid, Alkaline, Neutral |
| Position | Full shade, Partial shade |
| Shape | Mound-forming |
| Suggest planting location | Woodland Garden, Shade Garden, Garden edging and borders, Ground cover planting, Underplanting for roses and shrubs |
| Type | Perennial |
| Use for | Ground cover, Edging Plant, Shade Garden |
| Years to max height | 2 |
| Drought resistance | no |
| Soil | Chalk, Clay, Loam, Sand |
| Local names | Jack Frost Siberian bugloss, Jack Frost heartleaf brunnera |
| Blomidon Item No | MO23084323, 7937659568179, ZBRUMAJF0001G, 100-7769, 201625449, 201811190, 201903755 |
| Usps | Silver heart leaves retain crisp green veins and a narrow green rim., Airy sky-blue spring cymes brighten cool woodland shade., Shade and moist drained soil sustain silver foliage and spring flowers. |
| Cultivation | |
| Propagation | Divide established clumps in spring. |
| Pests | Generally pest-free in gardens, though aphids and slugs may occasionally occur. |
| Diseases | Generally disease-free in gardens; overly wet crowns may develop rot, and Botrytis, Fusarium, Phytophthora, or Thielaviopsis may occur in production. |
| Pruning | No routine pruning is required; remove spent flower stalks and damaged leaves for appearance, then clear old foliage in spring as new leaves emerge. |
| Watering instructions | Keep soil moist and drained; water in dry spells without saturating crowns. |
| Sunlight instructions | Give cool partial shade or full shade, sheltered from harsh afternoon sun. |


