Geranium, Double Meadow Cranesbill, Hardy Geranium 'Plenum Violaceum'

Geranium pratense

Family
Geraniaceae (jer-ay-nee-AY-see-ee)
Genus
Geranium (jer-AY-nee-um)
Species
pratense (pray-TEN-see)
Synonym
Sun Exposure
Sun to Partial Shade
Foliage
Herbaceous
Height
24-36 in. (60-90 cm)
Spacing
18-24 in. (45-60 cm)
Hardiness
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)
Danger
N/A
Bloom Color
Blue-Violet
Lavender
Bloom Time
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Other Details
Category
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Bronze
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)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)
Patent Information
Non-patented
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
Regional

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

Kingman, Arizona

Minneapolis, Minnesota

Girard, Pennsylvania

Olympia, Washington

Vancouver, Washington

Featured Videos

Gardener's Notes:

2
positives
2
neutrals
0
negative
Sort By:
Sort By:
H
Auburn, MI | March 2019 | neutral

Does anyone in the USA have an online source for this and any double geranium? Why do we have to covet(sometimes forever) the plants Brit...Read More

C
ROSLINDALE, MA | November 2014 | neutral

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

The double flowers are ...Read More

D
D
| May 2012 | positive

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 wa...Read More

K
K
(Zone 9a) | September 2003 | positive

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...Read More

Featured
Echinocereus Species
(Echinocereus coccineus subsp. paucispinus)
Hammerhead Worm (land planarian)
(Bipalium kewense)
Snowy Egret
(Egretta thula)
Featured
Echinocereus Species
(Echinocereus coccineus subsp. paucispinus)
Hammerhead Worm (land planarian)
(Bipalium kewense)
Snowy Egret
(Egretta thula)