| Common Name | Silver Siberian bugloss |
|---|---|
| Family | Boraginaceae |
| Genus | Brunnera |
| species | macrophylla |
| Plant Type | Perennial |
| US Patent # | -- |
| EU Grant # | EU9772 |
| Bloom Time | April, May |
| Flower Color | Blue |
| Foliage Color | Green, White |
| Dormancy | Winter |
| Exposure | Part Shade, Full Shade |
| Growth Habit | Mounding |
| Growth Rate | Fast |
| Hardiness Zone | 4, 5, 6, 7, 8, 9 |
| How Different? | Has extremely good silvering. It differs from 'Looking Glass' because its veins are green. |
| Landscape Value | A wonderful shade accent plant. Use in containers, as a mass planting, in a border, or under high branching shrubs. |
| Most Active Growing Season | Spring |
| Persistence | Deciduous |
| Size (HT/W/FL HT) | 12" / 18" / 17" |
| Soil (Garden) | Prefers organic soils, must be well drained but moist. |
| Water (Garden) | Moderate, prefers even moisture. |
| Special Uses | Award Winners, Deer Resistant |
| Comments | 'Jack Frost' can take more sun in the Pacific Northwest. When the clump starts to deteriorate in the center, it is time to divide it. Perennial Plant of the Year for 2012. |
Brunnera ‘Jack Frost’
Sky blue, forget-me-not flowers and leaves with a netted silver overlay. Absolutely stunning in the garden from early spring to fall. One of the showiest and most garden worthy plants to come along in a decade. Perennial Plant of the Year for 2012.
USDA Hardiness Zone(s): 4-9
Size (HT/W/FL HT): 12″ / 18″ / 17″
Exposure: Part Shade, Full Shade
Bloom Time(s): April, May
| Water (Greenhouse) | Dry moderately between waterings. |
| EC | 0.5 – 0.7 |
| pH | 5.6 – 6.8 |
| Fertility Needs | 50 ppm |
| Notes | Recommend growing under 35% shade cloth during summer months. |
| Finish Time to 4″ | 5 – 7 weeks |
| Finish Time to Gallon | 8 – 10 weeks |
| Day Length for Flowering | Long Day |
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