Photo by Melody

PlantFiles: Meadow Cranesbill, Hardy Geranium
Geranium pratense 'Mrs Kendall Clarke'

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

» View all varieties of Hardy Geraniums

2 vendors have this plant for sale.

5 members have or want this plant for trade.


24-36 in. (60-90 cm)

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:
Medium Blue

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

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There are a total of 10 photos.
Click here to view them all!


1 positive
1 neutral
No negatives

Gardeners' Notes:

Neutral coriaceous On Oct 22, 2014, coriaceous from ROSLINDALE, MA wrote:

From a distance, the flowers appear pale gray-blue. The petals are blue-violet, with their network of fine veins delicately emphasized in white. Up close, they are as intricately patterned as butterfly wings.

In an article on the RHS website, Graham Rice names this one of the 10 best hardy geraniums for the garden.

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

At the Chicago Botanic Garden's hardy geranium evaluation, it bloomed from late May to early July and earned a performance rating of "good". Clumps reached 24" tall and 38" wide. Cutting back after flowering improved habit and health.

Positive Gabrielle On Jan 26, 2006, Gabrielle from (Zone 5a) wrote:

I like the flowers on 'Mrs. Kendall Clarke' (also 'Mrs. Kendall Clark'), but the plant does have a tendency to flop out of its bounds. It also self-seeds a little. Stratification aids germination of seeds.

Blooms late May to mid July in my garden.


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

Garberville, California
Richmond, California
East Amherst, New York
Mill City, Oregon

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