Brunnera macrophylla 'Jack Frost' (Jack Frost Heartleaf Brunnera, Jack Frost Siberian Bugloss)


Botanical Information

FamilyBoraginaceae
GenusBrunnera
Speciesmacrophylla
Cultivar'Jack Frost'
CategoryPerennials
Origin2012 Perennial Plant of the Year.
Pronunciation

Details

USDA Hardiness Zone3 - 8
USDA Hardiness Ref.
Canadian Hardiness Zone1a - 8a
Canada Hardiness Ref.
RHS Hardiness ZoneH4 - H7
RHS Hardiness Ref.
Temperature (°C)-20
Temperature (°F)-40 - 20
Height30 - 45 cm
Spread30 - 45 cm
GrowthMedium
Flowering PeriodApril, May

Description and Growing Information

ShapeSpreading and clump-forming.
LandscapeGround cover, specimen planting, group or mass planting, border, gardens and container planting.
PropagationDivision and root cuttings.
CultivationPartial-shade. Average, medium moisture and well-drained soil. Prefers moist, organically rich soils.
PestsSlugs and snails may be a problem.
Notable SpecimensA.M. Cuddy Gardens, Strathroy, Ontario, Canada.
HabitatHorticultural origin.
Leaf DescriptionHeart-shaped basal foliage with veins and a thin rim around the leaf edges. Smaller upper leaves are elliptic. The stems are slender and 45 cm tall.
Flower DescriptionSmall, forget-me-not-like flowers, branched racemes rising above the foliage on stems.
Colour DescriptionThe leaves are a whitish-silver with green primary and secondary veins and green edges. The flowers are light blue with a yellow center.

Photographs