Hardy Geranium (Geranium 'Johnson's Blue') in the Geraniums Database

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Common names:
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General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun to Partial Shade
Water Preferences: Mesic
Minimum cold hardiness: Zone 4a -34.4 °C (-30 °F) to -31.7 °C (-25 °F)
Maximum recommended zone: Zone 8b
Plant Height: 12 - 18 inches
Plant Spread: 24 - 30 inches
Leaves: Deciduous
Flowers: Showy
Other: flowers have five petals; cut plants back almost all the way to the ground after flowering
Flower Color: Blue
Bloom Size: 1"-2"
Flower Time: Late spring or early summer
Late summer or early fall
Other: Deadheading flowers ensures more flowering throughout the season. June to September.
Underground structures: Rhizome
Uses: Groundcover
Will Naturalize
Wildlife Attractant: Bees
Resistances: Deer Resistant
Rabbit Resistant
Propagation: Seeds: Can handle transplanting
Other info: Self-seeding
Propagation: Other methods: Cuttings: Stem
Other: Take semi-ripe cuttings during the late summer when growth has slowed and plant stems have become firmer.
Containers: Suitable in 3 gallon or larger
Needs excellent drainage in pots
Parentage: Geranium himalayense x Geranium pratense


Photo gallery:

Posted by gardengus (Indiana Zone 5b) on Apr 19, 2013 5:46 AM

This geranium is a true perennial and has been established in my (zone 5 ) garden for 10+ years. It does not need to be divided. I have divided mine once to place a plant in a new location. I have it growing both in full sun and in afternoon shade. the shaded plant is a bit taller (by 20%), but there is no noticeable bloom difference. In wet years it gets a bit floppy. It receives no additional water in my garden.

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Posted by okus (Lincolnshire, UK) on Sep 23, 2011 5:44 AM

Bees love this plant!

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Plant Events from our members
aspenhill On April 22, 2016 Obtained plant
Black Creek Greenhouse - qty 1
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Discussion Threads about this plant
Thread Title Last Reply Replies
Blue flower by cfarrin Jun 22, 2017 9:15 AM 5
Chicagoland Annual garden swap 2017 by oerickson Aug 25, 2017 10:41 AM 303
2017 Garden Chat and Photos by RickM Dec 31, 2017 1:15 PM 511
First Flowers of Spring 2017 by greenthumb99 May 26, 2017 5:35 PM 294
What's Blooming 2017 - Photos and Chat. by NJBob Jan 1, 2018 8:14 PM 1,563
I need bridge plant suggestions by Kabby Jul 6, 2016 3:45 PM 18
Is this an Aconitum? by mrperrier May 29, 2016 8:26 AM 29
What did I plant ? by CAMfromMD Apr 13, 2016 2:52 PM 3
Chicagoland garden swap 2016 by oerickson Apr 8, 2017 1:31 PM 206
Chicagoland annual plant swap 2015 by oerickson Jun 8, 2015 8:43 AM 92

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