Photo by Melody

PlantFiles: Himalayan Geranium, Lilac Cranesbill
Geranium 'Johnson's Blue'

Family: Geraniaceae (jer-ay-nee-AY-see-ee) (Info)
Genus: Geranium (jer-AY-nee-um) (Info)
Cultivar: Johnson's Blue

Synonym:Geranium himalayense x pratense

» View all varieties of Hardy Geraniums

7 vendors have this plant for sale.

27 members have or want this plant for trade.


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)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)

Sun Exposure:
Sun to Partial Shade


Bloom Color:
Magenta (Pink-Purple)

Bloom Time:
Mid Summer
Late Summer/Early Fall


Other details:
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)

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

Click thumbnail
to view:

By Galanthophile
Thumbnail #1 of Geranium  by Galanthophile

By Galanthophile
Thumbnail #2 of Geranium  by Galanthophile

By ngam
Thumbnail #3 of Geranium  by ngam

By nepeangarden
Thumbnail #4 of Geranium  by nepeangarden

By mark
Thumbnail #5 of Geranium  by mark

By Weezingreens
Thumbnail #6 of Geranium  by Weezingreens

By Weezingreens
Thumbnail #7 of Geranium  by Weezingreens

There are a total of 31 photos.
Click here to view them all!


16 positives
6 neutrals
No negatives

Gardeners' Notes:

Neutral coriaceous On Jun 1, 2014, coriaceous from ROSLINDALE, MA wrote:

I was always disappointed by the relative brevity of this cultivar's season of bloom, especially since the descriptions generally speak of months of bloom and not the few weeks I've seen. But now 'Rozanne' has superseded 'Johnson's Blue' as my workhorse "blue" geranium. Seems I'm not alone.

'Johnson's Blue' has always bloomed blue-violet for me, and never pink or magenta.

This cultivar originated the 1950's in England from seed of G. pratense, and is believed to be a hybrid with G. himalayense. It is intolerant of the hot humid summers of the southeastern states, and blooms best and longest in cool-summer climates like Great Britain and the Pacific Northwest.

This spreads underground by rhizomes, though not aggressively.

In the Chicago Botanic Garden's 2004 hardy geranium performance evaluations, three other blue-violet geraniums of similar size and habit performed distinctly better than 'Johnson's Blue': 'Blue Cloud', 'Brookside', and 'Moran'. All 3 were more floriferous. All 3 were among the six highest rated among the 111 geraniums evaluated.

Positive klgaffney On Mar 22, 2013, klgaffney from Bayville, NJ wrote:

Beautiful blooms, and the sprawling habit made it a charming companion to a patch of 'ragged jack' kale. The heat of late summer did beat it up some; it didn't occur to me to cut it back and see if it would recover in the fall. I'll try that this year.

Positive Wildernessgirl On Feb 29, 2012, Wildernessgirl from Mountain Village, CO wrote:

I live in a ski town where quite often it doesn't stop snowing until May and starts again in October. I bought three of these that were already mature and planted in area that is part shade and very damp. I love these plants! They bloomed from May until October. They did die back in late August but a week or two later started a r growth and were even more beautiful. Require very little care other than watering. They came back even fuller and taller with more blooms the second year. They are growing in area where very few flowers would grow. The sweet woodruff growing next to it is a full shade plant.

Positive anelson On Aug 10, 2011, anelson from Birchwood, WI (Zone 3b) wrote:

This plant has beautiful blue blooms. It's true that it does have a bit of a trailing/flopping manner, but that only applies to the stems on which the flowers are borne - those stems do not have many leaves so they can just nestle into the plants around them and the little blue flowers can peek out from behind other foliage. Once they have finished blooming and are trimmed back, the foliage makes a tidy mound about 12-15" high.

Positive pgt On Jan 17, 2009, pgt from Chalfont, PA (Zone 6b) wrote:

Love, love, love this plant! I planted a few of these from bare-root 2 years ago. The plants blooms from May through the end of June, and are just gorgeous. They are so light and airy, and the flowers are a lovely blue-purple. When they are done blooming, I cut the plants down to the ground, and fresh dark green beautiful foliage emerges quickly for the rest of the summer, and then turns red for the fall. I think that this plant gives a garden a 'cottagy feel'. Highly recommend it.

Neutral Malus2006 On Jun 2, 2008, Malus2006 from Coon Rapids, MN (Zone 4a) wrote:

Older cultivar that are still sold, at least one source said it had the bad habit of toppling over during flowering.

Positive Bellisgirl On Mar 7, 2007, Bellisgirl from Spokane, WA wrote:

This will be my third year growing this plant. I adore it! Mine got about two feet high! I think that is because it is in almost full shade, in an area that stays perpetually moist. It is also has good drainage in sandy soil on a slight slope. I love its true-blue flowers!

Positive Leehallfae On Jun 26, 2006, Leehallfae from Seattle, WA wrote:

This Cranesbill does very well in our shady and somewhat cool soil. It starts blooming in July and continues to bloom through November.

Ours has needed very little additional care, once they were moved from containers into the yard.

Neutral doss On Apr 16, 2006, doss from Stanford, CA (Zone 9b) wrote:

This geranium is sensitive to zone so it doesn't grow well above zone 8. It has few flowers and is rangy here. I try to stretch my zones sometimes but this didn't work in my zone 9 garden.

Positive tacm On Apr 15, 2006, tacm from Mansfield, TX (Zone 8a) wrote:

DFW zone 8b - Blooms beautifully in spring a vivid magenta color. withstands dry conditions and freezing temps well.
a perfect 'in betweener' spilling out from larger plants.

Positive AuntieFran413 On Sep 10, 2005, AuntieFran413 from Marysville, WA wrote:

We inherited this unknown entity when we bought this house in September 2004. What a joy it's been! It was just covered with beautiful blossoms for months! Yes, it tends to sprawl, but I much prefer a casual garden to a formal one so that may be why I love this plant so much!

Positive northgrass On Mar 6, 2005, northgrass from West Chazy, NY (Zone 4b) wrote:

I am growing mine in a rather dry area where it is doing pretty well. The plant is leggy but planted among other plants, it can be an asset. The flowers are very pretty popping out unexpectely here and there.

Positive JefeQuicktech On Dec 30, 2004, JefeQuicktech from Moorhead, MN (Zone 4a) wrote:

'Johnson's Blue' is a very mannerly, yet, rugged plant that does well in our zone without any special protection. It graces the middle of a paver stone deck nestled comfortably next to a Feather Reed Grass 'Karl Foerster' (Calamagrostis acutiflora). They seem to really like each other.

Positive Karenn On Jun 1, 2004, Karenn from Mount Prospect, IL (Zone 5a) wrote:

Johnson's Blue is probably one of the easiest cranesbills to grow. I have found when I place a grow ring above it, it is much better behaved in spring. You can delay flowering in spring by pinching back, but I love the "blowsey" look with the grow ring. When the flowers start to fade, I shear it back, almost to the ground. It regrows much better behaved foliage, and sometimes will rebloom, but not as abundantly as the first bloom. I live in 5a/4b and have this plant on the east side of my home with fairly moist soil (courtesy of a close downspout). It has made babies a few times; since it's alongside a flagstone/pea gravel path, I have kept some, and dug & passed on the others.

Neutral Magazinewriter On May 31, 2004, Magazinewriter from Bloomfield Hills, MI wrote:

It has been extremely rainy here in Michigan. The Johnson's Blue Geraniums I planted earlier this spring just started to bloom when they got flattened by a torrential rainstorm. They look as if they will continue to bloom a lot -- but it is an awfully messy looking plant.

Neutral uofagirl On May 31, 2004, uofagirl from Orrville, OH (Zone 6a) wrote:

I agree w/ Vidamc. Mine is leggy and huge. Heavy rains have made the center very bare, but its still a prolific bloomer.

Positive kooger On May 24, 2004, kooger from Oostburg, WI (Zone 5b) wrote:

Really like this plant, makes a clump about 14" high and stays nice looking all summer.

Positive henryr10 On May 18, 2004, henryr10 from Cincinnati, OH (Zone 6b) wrote:

I bought this plant unmarked in an end of season sale last Fall here in Cincinnati (Zone6).
Half dried out, root-bound and ragged I think it went for a dollar.
I planted it in a ten inch pot and promptly forgot about it.
It was left in the open unprotected, by me, all winter.
It had a minimal leaf cover and whatever snowfall we had.
Temps dipped to 0 several times.

Come early Spring I got a flush of growth from a, I thought, bare dead pot.

Now it 15" tall and wide, in full bloom, and gorgeous.

It will be well protected this Fall for sure!!

Positive vidamc On Mar 21, 2004, vidamc from Fenton, MO (Zone 6a) wrote:

This plant actually grows about 30" tall with a spread of approx 36" in my garden. It gets sheared (way too many blooms to deadhead) in the hottest part of summer then reblooms. I would actually prefer it to grow more compact, does anyone know if this can be cut back in the spring (like I do with garden mums) to create a tighter growing plant?

Positive Sunshine12 On Mar 19, 2003, Sunshine12 wrote:

They like moist, well- drained soil; organic soils promote spread. Give plenty of water during hot spells to keep the blooms coming. Shear after blooming to rejuvenate and they will rebloom. One neat feature of 'Rozanne' is that the foliage turns reddish-brown in Fall. Divide in Spring when clumps show signs of crowding (approximately every 4 years).

Positive jkom51 On Oct 21, 2002, jkom51 from Oakland, CA (Zone 9b) wrote:

Vigorous grower, but in our Nor. Ca. dry summers, it dies back. Revives when watered again, however. To keep it evergreen, needs a weekly watering, so not suitable in xeriscaping except in moister, clay-based beds.

Neutral Terry On Mar 9, 2001, Terry from Murfreesboro, TN (Zone 7a) wrote:

Vigorous, clump forming perennial flowers starting in spring to early summer; may go dorman in hottest weather. Cup-shaped flowers are a vivid blue and tinged pink at the center. Plant in well-drained soil. Provide afternoon shade, especially in the south.


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

Seward, Alaska
Little Rock, Arkansas
Clovis, California
Mission Viejo, California
Littleton, Colorado
Telluride, Colorado
Lake Alfred, Florida
Boise, Idaho
Chicago, Illinois
Des Plaines, Illinois
Mount Prospect, Illinois
Brownsburg, Indiana
Jeffersonville, Indiana
Inwood, Iowa
Iowa City, Iowa
Nichols, Iowa
Dracut, Massachusetts
Jamaica Plain, Massachusetts
Norton, Massachusetts
Roslindale, Massachusetts
Uxbridge, Massachusetts
Wayland, Massachusetts
Redford, Michigan
Andover, Minnesota
Minneapolis, Minnesota (2 reports)
Fenton, Missouri
Bellevue, Nebraska
Bayville, New Jersey
Jamesburg, New Jersey
Albuquerque, New Mexico
Buffalo, New York
Deposit, New York
Jefferson, New York
Pennellville, New York
Wallkill, New York
Belfield, North Dakota
Medora, North Dakota
Bucyrus, Ohio
Cincinnati, Ohio
Columbus, Ohio
Coshocton, Ohio
Hamilton, Ohio
Enid, Oklahoma
Bend, Oregon
Dallas, Oregon
Lake Oswego, Oregon
Albion, Pennsylvania
Chalfont, Pennsylvania
Coopersburg, Pennsylvania
Ladys Island, South Carolina
Aberdeen, South Dakota
Christiana, Tennessee
Crossville, Tennessee
Knoxville, Tennessee
Mansfield, Texas
Salt Lake City, Utah
Essex Junction, Vermont
Newport, Vermont
Lexington, Virginia
Lincoln, Virginia
Radford, Virginia
Ames Lake, Washington
Cascade-fairwood, Washington
Seattle, Washington
Vancouver, Washington
Birchwood, Wisconsin
Madison, Wisconsin
Milwaukee, Wisconsin
Casper, Wyoming
Cody, Wyoming
Kinnear, Wyoming
Riverton, Wyoming

We recommend Firefox
Overwhelmed? There's a lot to see here. Try starting at our homepage.

[ Home | About | Advertise | Media Kit | Mission | Featured Companies | Submit an Article | Terms of Use | Tour | Rules | Privacy Policy | Contact Us ]

Back to the top

Copyright © 2000-2015 Dave's Garden, an Internet Brands company. All Rights Reserved.

Hope for America