Brunnera macrophylla

‘Jack Frost’


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Brunnera macrophylla ‘Jack Frost’

Lovely rich blue sprays of fine flowers in late winter and early spring are a blessing
But it is the beautiful, frosted silver foliage clumps, that make me adore Brunnera macrophylla ‘Jack Frost’.
And I could not be without it in my tree filled garden.
(Scroll down to “Growing” section for plant details & growing advice).

Brilliant blue in late winter

The brilliant blue flowers are very welcome. As they come in late winter and chase away the winter gloom.
So Brunnera ‘Jack Frost’ is one of the first to flower with us.
But it is the wonderful silver, heart shaped leaves that really capture me. With their edge of deep green lace around a silver heart.

A hardy Brunnera

Brunnera macrophylla ‘Jack Frost’ can tolerate more sun and periods of dry than some older cultivars.
And it is less susceptible to scorch when it does catch the sun or have to endure some dry.
It looks stunning when shining in a decorative container in a dark area.
So it is no wonder that ‘Jack Frost’ holds the prestigious ‘Award of Garden Merit” from the Royal Horticultural Society. This is the Olympic Gold Medal of the gardening world.

Shining silver groundcover for shade

However Brunnera macrophylla ‘Jack Frost’ is really ideal as a foliage feature, edging plant along a path, or ground-cover in Deep to Part Shade. Because it can prosper in low light levels.
So it is perfectly happy under trees and shrubs, or in deeply shadowed areas between buildings.
Where it is surprisingly tolerant of occasional dry spells and splashes from the sun.
And it positively glows and lights up any gloomy area.

Growing: Brunnera macrophylla ‘Jack Frost’

– Height with flowers: 30cm approx.
– Width: Ever-silver, neat foliage clump to a diameter of 20cm – 40cm approx.
– Position: Deep Shade, as well as Partial Shade and Dappled Sun.
– Soil: Brunnera thrive with mulch, and can tolerate most soil types.
They are robustly easy in loam and clay based soils opened up with organic matter.
And they can even prosper in sandy soils, as long as they are well mulched. 
Plus they are serene in a range of soil pH, from the acid to the alkaline lime side of neutral.

– Frost: Brunnera are extremely frost hardy, as they tolerate severe frosts to well below -20C
– Water: Normal average garden watering satisfies Brunnera. And they certainly respond well to mulch and compost, which helps even out the moisture content in the soil.
They can tolerate short periods of dry between drinks, and this time extends out when they are well mulched.
– Growth: Neat, shining, evergreen (ever-silver) perennial clump.
– Beneficial for wildlife:
Bees and other beneficial insects are attracted to the small but vivid, bright blue blooms. Our bees certainly appreciate any flowers on offer late in winter.

– Care: Low maintenance. So simply remove spent flowers and any old leaves after flowering. Otherwise they can just be left alone to get on with their job of glowing with silver in dark areas.
– Deer & Rabbit resistant: The foliage is very attractive to us, but luckily is not so attractive to deer and rabbits. Brunnera are also rarely plagued by pests and diseases.
– Origin: Native to the woodlands of Eastern Europe and North West Asia.

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