Brunnera, Variegated Siberian Bugloss, False Forget-Me-Not, Perennial Forget-Me-Not 'Jack Frost'

Brunnera macrophylla

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
Registered or introduced: 2001
Synonym:Anchusa mysotodiflora
View this plant in a garden



Water Requirements:

Average Water Needs; Water regularly; do not overwater

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

Sun Exposure:

Light Shade

Partial to Full Shade

Full Shade


Grown for foliage


Good Fall Color

Foliage Color:



12-18 in. (30-45 cm)


12-15 in. (30-38 cm)


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)

Where to Grow:

Grow outdoors year-round in hardiness zone



Bloom Color:

Dark Blue

Bloom Characteristics:

This plant is attractive to bees, butterflies and/or birds

Bloom Size:

Unknown - Tell us

Bloom Time:

Mid Spring

Other details:

Unknown - Tell us

Soil pH requirements:

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

Patent Information:


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


This plant is said to grow outdoors in the following regions:

Brentwood, California

Calistoga, California

Clayton, California

Fairfield, California

San Jose, California

San Leandro, California

Scotts Valley, California

Stanford, California

Bozrah, Connecticut

Laurel, Delaware

Atlanta, Georgia

Boise, Idaho

Bloomington, Illinois

Chicago, Illinois

Crystal Lake, Illinois

Edgewood, Illinois

Edwardsville, Illinois

Machesney Park, Illinois

Mount Prospect, Illinois

Olympia Fields, Illinois

Plainfield, Illinois

Fort Wayne, Indiana

Indianapolis, Indiana

Portland, Indiana

Inwood, Iowa

Ionia, Iowa

Hebron, Kentucky

Louisville, Kentucky

Bordelonville, Louisiana

South China, Maine

Frederick, Maryland

Gaithersburg, Maryland

Rockville, Maryland

Bridgewater, Massachusetts

Dracut, Massachusetts

Ann Arbor, Michigan

Dearborn Heights, Michigan

Grand Rapids, Michigan

Holland, Michigan

Lincoln Park, Michigan

Royal Oak, Michigan

Minneapolis, Minnesota(2 reports)

Carson City, Nevada

Greenfield, New Hampshire

Munsonville, New Hampshire

Bridgewater, New Jersey

Clinton Corners, New York

Hudson, New York

Elizabeth City, North Carolina

Raleigh, North Carolina

Belfield, North Dakota

Cincinnati, Ohio

Cleveland, Ohio

Columbus, Ohio(2 reports)

Coshocton, Ohio

Ravenna, Ohio

Warren, Ohio

Salina, Oklahoma

Portland, Oregon

Salem, Oregon


Bethlehem, Pennsylvania

Coraopolis, Pennsylvania

Norristown, Pennsylvania

Wilkes Barre, Pennsylvania

Hendersonville, Tennessee

Salt Lake City, Utah

Charlottesville, Virginia

Leesburg, Virginia

Lexington, Virginia

Staunton, Virginia

Bellingham, Washington

Highland, Washington

Kalama, Washington

Kirkland, Washington

Langley, Washington(2 reports)

Mountlake Terrace, Washington

Pullman, Washington

Seattle, Washington

Stanwood, Washington

Twisp, Washington

Vancouver, Washington

Ellsworth, Wisconsin

Minocqua, Wisconsin

Racine, Wisconsin

show all

Gardeners' Notes:


On Sep 15, 2014, j101 from Mc Lean, VA wrote:

I planted Jack Frost Brunnera in a mulched bed under willow oaks in Northern Virginia. The first summer, most of the leaves browned (I was told it was due to the wet summer and slugs) and they died off in the winter, and 20% did not come back in the spring, so I replanted them and applied slug treatment. They all browned again this summer - cooperative extension told me it was nematodes, and the garden center that sold it told me to apply fungicide. I'm done with them and replanting.


On Jun 11, 2013, BoPo from Milwaukee, WI (Zone 5b) wrote:

The first couple of years here, Jack Frost did pretty well in a shady but open area next to my garage. Really an attractive plant, but then petered out on me a couple years later until they never grew back. Unsure why as this is an area where my hostas thrived and grew monstrous in a matter of a few years.

Zone 5, rich black compact soil, clayish maybe 18" deep.

If you can grow these, they're definitely worth it. Stunning next to purple leaf sandcherries or japanese fernleaf red maples. I suspect they prefer an evenly moist soil.


On Mar 10, 2013, emmaex from Bordelonville, LA wrote:

I have grown this beautiful plant successfully for two years in central Louisiana. It has survived the Louisiana summers without apparent stress. I think the location is key to the plant thriving. It is planted in full shade with a northern exposure heavily mulched with pine straw.


On Apr 9, 2012, echinaceamaniac from (Clint) Medina, TN (Zone 7b) wrote:

It can't take the heat here. I have tried 4 plants and not one has survived. They should stop selling these in the southern states. It is a beautiful plant though when it is alive. However, this plant also attracts foliar nemotodes. This is a plant that can't tolerate hot summers. It will go dormant in the summer leaving empty spots.


On Mar 5, 2012, Kat88 from Atkinson, NH (Zone 5b) wrote:

I have had four Jack Frost Brunneras for about 3 years now. Wonderful plants !! I have them along my front walkway, in part sun from morning til about noon, then they have afternoon shade. I don't need to start watering them until about June , but since I plant annual (Elfin Violet) impatiens in the same bed with them, I just water them all at the same time. I've also found if I cut back the flower stems right after the first bloom, I'll get a few more flowers again around August !! They are one of my absolute favorite perennials !!


On Apr 9, 2011, RabbitSoup from Fort Wayne, IN wrote:

Does very well in morning sun, afternoon shade. The foliage is stunning all season long, the blooms are just a nice bonus. They did so well the first year that I was able to divide and share. They look like you fussed over them, but no fussing is required. Only wish I had room for more.


On Apr 16, 2010, kentstar from Ravenna, OH (Zone 5b) wrote:

The perfect perennial for me! Love it! What more needs to be said?


On Nov 19, 2009, bonehead from Cedarhome, WA (Zone 8b) 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.


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)


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).


On Dec 22, 2007, a5footsea from Russell, ON (Zone 5a) 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.


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!


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

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


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

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


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.


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.


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.


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 vein... read more


On Aug 28, 2003, Happenstance from Northern California, CA 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.