Photo by Melody

PlantFiles: Meadow Cranesbill, Hardy Geranium
Geranium pratense 'Plenum Violaceum'

Family: Geraniaceae (jer-ay-nee-AY-see-ee) (Info)
Genus: Geranium (jer-AY-nee-um) (Info)
Species: pratense (pray-TEN-see) (Info)
Cultivar: Plenum Violaceum

» View all varieties of Hardy Geraniums

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18-24 in. (45-60 cm)

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)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:
Sun to Partial Shade


Bloom Color:

Bloom Time:
Late Spring/Early Summer
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
From seed; direct sow after last frost
From seed; germinate in a damp paper towel

Seed Collecting:
Bag seedheads to capture ripening seed
Allow seedheads to dry on plants; remove and collect seeds

Click thumbnail
to view:

By mark
Thumbnail #1 of Geranium pratense by mark

Thumbnail #2 of Geranium pratense by KMAC

Thumbnail #3 of Geranium pratense by KMAC

Thumbnail #4 of Geranium pratense by KMAC

By Galanthophile
Thumbnail #5 of Geranium pratense by Galanthophile

By juanwillis
Thumbnail #6 of Geranium pratense by juanwillis

By growin
Thumbnail #7 of Geranium pratense by growin

There are a total of 13 photos.
Click here to view them all!


2 positives
1 neutral
No negatives

Gardeners' Notes:

Neutral coriaceous On Nov 24, 2014, coriaceous from ROSLINDALE, MA wrote:

The Royal Horticultural Society has granted this cultivar its coveted Award of Garden Merit (AGM).

The double flowers are sterile and do not produce seed. Most G. pratense can be weedy from self-sowing, but not this one.

Positive djay On May 1, 2012, djay from Edmonton
Canada wrote:

I really liked this geranium. It grew well for me in my zone 3b garden. Unfortunately it succumed to a dose of Round-Up when my wife was attempting to kill some thistles and drift from the spray was enough to kill it. I have been looking for another one like this and I am willing to purchase seeds if necessary to propagate it. Does anyone know where the seeds can be purchased from? Kindly email me at: with the information.
Thank you.

Positive KMAC On Sep 28, 2003, KMAC from Co. Cork
Ireland (Zone 9a) wrote:

This is a really stunning plant, it thrives in full sun in heavy clay soil, needs no special attention. Even the rabbits have not touched it.
My pictures were taken on June 24 in our garden in Co. Cork


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

Kingman, Arizona
Minneapolis, Minnesota
Girard, Pennsylvania
Olympia, Washington
Vancouver, Washington

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