Regal Pelargonium (UK), Martha Washington Geranium (US), Pansy Flowered Geranium

Pelargonium x domesticum

Family
Geraniaceae (jer-ay-nee-AY-see-ee)
Genus
Pelargonium (pe-lar-GO-nee-um)
Species
x domesticum (doh-MESS-tik-um)
Synonym
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Herbaceous
Succulent
Height
12-18 in. (30-45 cm)
18-24 in. (45-60 cm)
Spacing
12-15 in. (30-38 cm)
Hardiness
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)
USDA Zone 11: above 4.5 °C (40 °F)
Danger
N/A
Bloom Color
Pink
Magenta (pink-purple)
Fuchsia (red-purple)
Red
Lavender
Bloom Time
Blooms repeatedly
Other Details
Category
Annuals
Tropicals and Tender Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Blue-Green
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
Patent Information
Non-patented
Propagation Methods
From herbaceous stem cuttings
Allow cut surface to callous over before planting
From seed; sow indoors before last frost
By serpentine layering
Seed Collecting
Bag seedheads to capture ripening seed
Allow seedheads to dry on plants; remove and collect seeds
Regional

This plant is said to grow outdoors in the following regions:

Hanceville, Alabama

Camarillo, California

Citrus Heights, California

Duarte, California

Fallbrook, California(5 reports)

Hayward, California

Long Beach, California

Manhattan Beach, California

Martinez, California

San Leandro, California

Temple City, California

Centerville, Iowa

Kent, Washington

Hanna, Wyoming

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Gardener's Notes:

3
positives
3
neutrals
0
negative
Sort By:
Sort By:
A
A
Camarillo, CA | January 2010 | positive

Blooms profusely in spring and summer in SoCal. I consider this plant a low-growing shrub. Does fine with half-day sun; benefits from mod...Read More

P
Fallbrook, CA | June 2006 | positive

Planted in west facing border with star jasmine in front and Indian Hawthorne behind. Beautiful color all year. I live in North San Diego...Read More

K
K
Oostburg, WI (Zone 5b) | May 2004 | positive

Bought mine May 2003, it was pretty all summer, over-wintered it in our cool bedroom (usually 55-65 deg.) and watered infrequently. Took ...Read More

I
I
ign
Hayward, CA (Zone 10a) | June 2003 | neutral

we purchased two of these (Martha Washington) late this winter. They are doing well in containers. I am having some problems with a type ...Read More

U
U
Manhattan Beach, CA (Zone 11) | June 2003 | neutral

Where hard frost won't kill them they should be grown in containers to keep them from taking off.

B
B
Baa
| October 2001 | neutral

Shrubby, evergreen perennial.

Has rounded, slightly toothed, mid green leaves on stout stems. Bears very showy, large, ve...Read More

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