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Hardy Geranium, Clark's Cranesbill 'Kashmir White'

Geranium clarkei

Family: Geraniaceae (jer-ay-nee-AY-see-ee) (Info)
Genus: Geranium (jer-AY-nee-um) (Info)
Species: clarkei (KLAR-kee-eye) (Info)
Cultivar: Kashmir White
» View all varieties of Hardy Geraniums


Alpines and Rock Gardens



Foliage Color:

Unknown - Tell us

Bloom Characteristics:

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

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Grow outdoors year-round

Suitable for growing in containers


12-18 in. (30-45 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)

Sun Exposure:

Full Sun

Sun to Partial Shade

Light Shade



Bloom Color:

White/Near White

Bloom Time:

Late Spring/Early Summer

Mid Summer



Other details:

Unknown - Tell us

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly 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


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

Freehold, New Jersey

Norristown, Pennsylvania

Lexington, Virginia

Gardeners' Notes:


On Oct 18, 2014, coriaceous from ROSLINDALE, MA wrote:

A beautiful, floriferous mounded perennial bearing 2" white flowers with radiating dark purple veins in June and July. An article on the RHS website, written by Graham Rice, names G. clarkei 'Kashmir White' one of the ten best hardy geraniums (at least for the British climate). []

It forms a slowly spreading clump 15-20" tall and wide. Compared to the closely related G. pratense, this species is lower growing, with leaves much more deeply cut, with more basal leaves, and with a more open inflorescence.

Cutting back the flowering stems as soon as flowering is over is said to encourage repeat bloom.

According to Allen Armitage, this is hardy from Z5 to Z7 in eastern North America. It is intolerant of the hot humid summers o... read more


On Jun 5, 2005, saya from Heerlen,
Netherlands (Zone 8b) wrote:

Finely divided foliage and beautiful large white flowers veined lilac. Flowers mainly May-July but continuing till autumn. Best in decent soil in sun or open position. Tolerates dry soil, but longer flowering with some moisture and becomes vigorous in heavy or rich soil. Makes a strong clump.Very lovely if planted together with plants that have a silvery foliage like Stachys byzantina...