Geranium Species, Hardy Tuberous Geranium, Tuberous-Rooted Cranesbill

Geraniumtuberosum

Family
Geraniaceae (jer-ay-nee-AY-see-ee)
Genus
Geranium (jer-AY-nee-um)
Species
tuberosum (too-ber-OH-sum)
Synonym
Sun Exposure
Sun to Partial Shade
Foliage
Herbaceous
Height
6-12 in. (15-30 cm)
Spacing
6-9 in. (15-22 cm)
Hardiness
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
Magenta (pink-purple)
Medium Purple
White/Near White
Bloom Time
Mid Summer
Late Summer/Early Fall
Other Details
Category
Alpines and Rock Gardens
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
Patent Information
Non-patented
Propagation Methods
By dividing the rootball
From herbaceous stem cuttings
Seed Collecting
Regional

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

Louisville, Kentucky

Vancouver, Washington

Featured Videos

Gardener's Notes:

1
positive
2
neutrals
0
negative
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T
(Zone 10a) | May 2020 | positive

I have grown geranium tuberosum for many years it grows really well and has formed a good sized clump. I grow in a sunny spot with well ...Read More

C
ROSLINDALE, MA | October 2014 | neutral

A spring ephemeral from southern Europe and Asia Minor---it goes dormant after its spring flowering.

I bought some tubers...Read More

J
Vancouver, WA (Zone 8b) | July 2005 | neutral

I found this Geranium a bit difficult to get established. I have about 30 different Hardy Geraniums and this is the only one that will n...Read More

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