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Brunnera macrophylla 'Jack Frost'

 
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Family: Boraginaceae
Genus: Brunnera (BROO-ner-uh) (Info)
Species: macrophylla (mak-roh-FIL-uh) (Info)
Cultivar: Jack Frost
Additional cultivar information: (PP13859)
Hybridized by Walters; Year of Registration or Introduction: 2001

Synonym:Anchusa mysotodiflora

14 vendors have this plant for sale.

32 members have or want this plant for trade.

Category:
Perennials

Height:
12-18 in. (30-45 cm)

Spacing:
12-15 in. (30-38 cm)

Hardiness:
USDA Zone 3a: to -39.9 °C (-40 °F)
USDA Zone 3b: to -37.2 °C (-35 °F)
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)

Sun Exposure:
Light Shade
Partial to Full Shade
Full Shade

Danger:
N/A

Bloom Color:
Medium Blue

Bloom Time:
Mid Spring

Foliage:
Grown for foliage
Herbaceous
Variegated
Silver/Gray

Other details:
Requires consistently moist soil; do not let dry out between waterings

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:
Patented

Propagation Methods:
By dividing the rootball

Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

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to view:

By Happenstance
Thumbnail #1 of Brunnera macrophylla by Happenstance

By bert
Thumbnail #2 of Brunnera macrophylla by bert

By bert
Thumbnail #3 of Brunnera macrophylla by bert

By bert
Thumbnail #4 of Brunnera macrophylla by bert

By Happenstance
Thumbnail #5 of Brunnera macrophylla by Happenstance

By goswimmin
Thumbnail #6 of Brunnera macrophylla by goswimmin

By Happenstance
Thumbnail #7 of Brunnera macrophylla by Happenstance

There are a total of 46 photos.
Click here to view them all!

Profile:

12 positives
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorComment
Positive bonehead On Nov 19, 2009, bonehead from Pacific NW, WA (Zone 8a) wrote:

A stunning plant for the shade, with dainty true blue flowers to boot. I got a small start from my sister and it filled in quite well the first season.

Positive anelson77 On May 20, 2009, anelson77 from Seattle, WA wrote:

I don't know where this plant has been all my life. I tried it out in a damp, shady spot where I was having trouble growing non weedy plants. It has spread into a nice sized patch already. I love both the foliage and the forget me not flowers (but without forget me not weediness and mildew)

Positive Kubileya On May 31, 2008, Kubileya from Laurel, DE (Zone 7a) wrote:

This is the second year in my garden for 'Jack Frost.' The silvery foliage and bright blue flowers are absolutely beautiful and really light up their corner of the garden. It needs constant, even moisture. Letting it dry out leads to brown, crispy spots on the leaves (I admit I've done that once or twice).

Positive a5footsea On Dec 22, 2007, a5footsea from North Vancouver, BC (Zone 7b) wrote:

This is one of my favourite perennials for shady areas. Their bright blue flowers bloom reliably, even in deep shade. I have several and all are now more than 36 inches wide after 3 seasons. They look great beside blue Hostas, Dicentra spectabilis "Gold Heart" and the orange/golden Heucheras.

Positive Bellisgirl On Feb 8, 2007, Bellisgirl from Spokane, WA wrote:

I love this plant! This will be my third year growing it. I got a start of it from my neighbor. At first I thought it might be hard to grow and need constant care, but its actually quite the opposite! It seems to thrive under little or no care. It does need well-drained and perpetually moist soil though. But the soil is not very rich. Mine is in almost full shade. The leaves are gorgeous, and liven up the gloomiest of shade gardens. Has lovely blue forget-me-not like flowers in the spring. Love it!

Positive Marilynbeth On Nov 21, 2006, Marilynbeth from Hebron, KY wrote:

I bought two plants last Spring and I love them! Beautiful plant!

Positive lovedirtynails On Jun 12, 2006, lovedirtynails from Portland, OR wrote:

This plant is thriving in full shade on the north side of my house.

Positive SongsofJoy On Jun 8, 2006, SongsofJoy from New Hampshire, NH (Zone 5b) wrote:

Love this plant. Bought three last year and they just finished flowering. Everyone who saw it in bloom commented on how pretty it is. Looking for more, but it does not seem to be readily available at local nurseries.

Positive kooger On Apr 19, 2005, kooger from Oostburg, WI (Zone 5b) wrote:

Planted this one last spring and it didn't get as large as I thought it would but I was delighted to see it did not winter-kill. I'm going to try water it more often this summer.

Positive Joan On Dec 29, 2004, Joan from Belfield, ND (Zone 4a) wrote:

This is my first year with the Jack Frost Brunnera, but it did really well. I have it planted in a shady spot near an evergreen tree, and it's very happy.


Additional info added to this note 1-21-06:
Plant will produce highly variable self-sown seedlings. Green seedlings should be weeded to prevent them from taking over.

Positive doss On Nov 13, 2004, doss from Stanford, CA (Zone 9b) wrote:

This is the first year for Jack Frost in my garden. It is in a very dark corner under redwood trees, next to ferns, ajuga, etc. It just lights up that corner so your eye is drawn to a beautiful place in the garden that might otherwise be lost.

Jack Frost grows in the shadiest part of my garden and it's color makes it a highlight in the shadows. I grew three to see how they would do and I'm buying more. Here it was only dormant about a month. Highly recommended.

This perennial plant was discovered at Walters Gardens in Zeeland, Michigan USA and recently won First Prize at Plantarium in Holland for Best New Perennial of the Year.

It was originally spotted in a flat (tray) of Brunnera m. 'Langtrees' and has large heart-shaped leaves with the veins highlighted in silver making this sport very distinct.

Brunnera 'Jack Frost' makes a clump 18 inches wide of rounded frosty looking silver leaves and is topped with tiny clusters of clear blue flowers in early spring and prefers moist, rich soils to grow the best plants.

Positive Happenstance On Aug 28, 2003, Happenstance from Fairfield, CA (Zone 10a) wrote:

Slow grower, but has held up well with more sun than recommended and seemed not to mind the 3 weeks of 100+ temps.

May 2004 - The large showy leaves return as the bloom cycle winds down.

Regional...

This plant has been said to grow in the following regions:

Calistoga, California
Clayton, California
Fairfield, California
San Jose, California
San Leandro, California
Scotts Valley, California
Stanford, California
Laurel, Delaware
Bloomington, Illinois
Chicago, Illinois
Machesney Park, Illinois
Mount Prospect, Illinois
Olympia Fields, Illinois
Plainfield, Illinois
Indianapolis, Indiana
Inwood, Iowa
Ionia, Iowa
Hebron, Kentucky
Louisville, Kentucky
Frederick, Maryland
Rockville, Maryland
Bridgewater, Massachusetts
Ann Arbor, Michigan
Dearborn Heights, Michigan
Grand Rapids, Michigan
Lincoln Park, Michigan
Carson City, Nevada
Munsonville, New Hampshire
Bridgewater, New Jersey
Clinton Corners, New York
Hudson, New York
Elizabeth City, North Carolina
Winston Salem, North Carolina
Belfield, North Dakota
Cincinnati, Ohio
Cleveland, Ohio
Columbus, Ohio
Coshocton, Ohio
Ravenna, Ohio
Warren, Ohio
Salina, Oklahoma
Portland, Oregon
Salem, Oregon
Coraopolis, Pennsylvania
Norristown, Pennsylvania
Wilkes Barre, Pennsylvania
Hendersonville, Tennessee
Lexington, Virginia
Staunton, Virginia
Kalama, Washington
Kirkland, Washington
Langley, Washington (2 reports)
Mountlake Terrace, Washington
Pullman, Washington
Seattle, Washington
Spokane, Washington
Stanwood, Washington
Twisp, Washington
Vancouver, Washington
Minocqua, Wisconsin



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