Photo by Melody

PlantFiles: Greyleaf Geranium, Grayleaf Geranium
Geranium cinereum var. subcaulescens 'Giuseppe'

Family: Geraniaceae (jer-ay-nee-AY-see-ee) (Info)
Genus: Geranium (jer-AY-nee-um) (Info)
Species: cinereum var. subcaulescens
Cultivar: Giuseppe

» View all varieties of Hardy Geraniums

4 members have or want this plant for trade.

Alpines and Rock Gardens

6-12 in. (15-30 cm)

9-12 in. (22-30 cm)

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)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:
Full Sun
Sun to Partial Shade
Light Shade


Bloom Color:
Magenta (Pink-Purple)

Bloom Time:
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall


Other details:
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
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 outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors
From seed; germinate in a damp paper towel

Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

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By philomel
Thumbnail #1 of Geranium cinereum var. subcaulescens by philomel

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2 positives
2 neutrals
No negatives

Gardeners' Notes:

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

Armitage says this is hardy Z5-7 in eastern North America. It's unhappy with hot summers of the US southeast, and a better bet for the west coast.

G. cinereum ssp. subcaulescens is now generally treated as a separate species, G. subcaulescens.

Positive ryguy319 On Jul 9, 2010, ryguy319 from Owosso, MI (Zone 5b) wrote:

I just got this plant and on the package and everything I've read about it it's good up to a zone 5. So I'm thinking that zone 7 as listed here on the plant file is a little underestimated.
Besides being that most of the Hardy Geraniums are good through a zone 5 anyway.
I'm a zone 5b so I'm hoping that all the info I've read is right I'm really betting on it.

Neutral mystic On Dec 29, 2006, mystic from Ewing, KY (Zone 6a) wrote:

Received the Royal Horticultural Society (RHS), 1993 Award of Garden Merit. Reconfirmed in 2006.

Positive philomel On Nov 10, 2004, philomel from Castelnau RB Pyrenes
France (Zone 8a) wrote:

A selection from the type plant which hails from the Balkan Peninsular and Turkey. It is less shocking in colour than the type and doesn't have the full black eye either, just a dark central area. It is as hardy though, unlike 'Splendens', which is a little less robust


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

Freedom, Pennsylvania

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