Geranium Species, Bloodwort, Herb Robert, Fox Geranium, Redshank, Robert Geranium

Geraniumrobertianum

Family
Geraniaceae (jer-ay-nee-AY-see-ee)
Genus
Geranium (jer-AY-nee-um)
Species
robertianum (roh-bert-ee-AH-num)
Synonym
Sun Exposure
Partial to Full Shade
Foliage
Deciduous
Height
12-18 in. (30-45 cm)
Spacing
18-24 in. (45-60 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
Pink
Bloom Time
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Mid Fall
Other Details
Category
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
May be a noxious weed or invasive
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
Non-patented
Propagation Methods
From seed; direct sow after last frost
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:

Burlingame, California

Fremont, California

Healdsburg, California

Pleasanton, California

Redwood City, California

San Francisco, California

Evanston, Illinois

Gaithersburg, Maryland

Roslindale, Massachusetts

Bellaire, Michigan

Cadillac, Michigan

Grand Rapids, Michigan

Royal Oak, Michigan

Warren, Michigan

Columbia, Missouri

Buffalo, New York

Croton On Hudson, New York

Syracuse, New York

Grassy Creek, North Carolina

Brookings, Oregon

Harbor, Oregon

Junction City, Oregon

Coopersburg, Pennsylvania

Doylestown, Pennsylvania

Mehoopany, Pennsylvania

Gig Harbor, Washington

Mukilteo, Washington

Olympia, Washington

Seattle, Washington

Stanwood, Washington

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Gardener's Notes:

5
positives
5
neutrals
8
negatives
Sort By:
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R
(Zone 1) | August 2014 | positive

The leaves of Herb Robert are the main part of the plant used for multiple, medicinal purposes. A great little herb plant - if only peopl...Read More

C
Columbia, MO | May 2014 | negative

This grows in a community wildflower garden I tend. It spreads throughout the beds, in the mowed grass areas, and competes with tall gras...Read More

C
| May 2014 | positive

I have found Herb Robert to be a special plant which is useful in the treatment of cancer by facilitating oxygen transportation to the ce...Read More

C
ROSLINDALE, MA | February 2014 | negative

I love geraniums, and it's hard to believe that something so small and delicate can be a noxious weed, but that's what it's proved to be ...Read More

D
Warren, MI (Zone 6b) | July 2013 | positive

Love this plant. Unless the temperatures drop below zero with no snow cover it is evergreen and will often bloom in January when little ...Read More

B
Junction City, OR | June 2009 | negative

This plant is extremely invasive and should not be offered for sale or trade. It will completely cover an area choking out all other plants.

A
Seattle, WA | May 2009 | negative

invasive exotic which has escaped to the woods and crowds out native woodland plants. Its also too weedy and stinky to be a good garden p...Read More

G
Everson, WA (Zone 7b) | April 2009 | positive

Is it a carrot, parsley, baby giant hogweed, poison hemlock? Doesn't everything look the same? Nice flowers...if it's the only plant yo...Read More

G
Healdsburg, CA | April 2009 | neutral

I have been trying to track the name of this one down for the last 10 years. I couldn't forgive that smell, either - it was so irritating...Read More

W
Olympia, WA | August 2007 | neutral

I came here to comment on what a horrible smell comes from any crushed plant parts. What has happened instead is that I can easily shift...Read More

J
Portland, OR | June 2007 | negative

This plant is VERY invasive in the forests of the Pacific Northwest and should not be planted, at least in Washington and Oregon under an...Read More

K
Nevada City, CA | August 2006 | negative

This is the most prolific weed I've ever had in my garden. And to think that I bought it at a nursery and planted it myself.
Year...Read More

M
Mehoopany, PA (Zone 5a) | July 2006 | neutral

In dry shade this plant grows to about six inches tall and wide and is well mannered. HOWEVER, some got into my wet shade garden and is n...Read More

L
Seattle, WA (Zone 8b) | June 2006 | negative

I think the lacy foliage and cute flowers of herb robert are beautiful, but this plant is *so* invasive where I live (Seattle). It's rea...Read More

W
Gig Harbor, WA | June 2005 | neutral

This is a very attractive groundcover, but it does spread like crazy and it is invasive. Also known as 'Stinky Bob', I'm surprised no one...Read More

G
G
Syracuse, NY | April 2004 | positive

This has been a great understory plant in the "natural" areas of our garden. It self-seeds abundantly throughout the garden, but its sha...Read More

P
Westbrook, ME (Zone 5a) | January 2003 | negative

This is a weedy little guy and better suited for a wildflower garden. I put one tiny plant in the corner of my shady bed and he threw his...Read More

L
L
(Zone 8a) | May 2002 | neutral

Common in shady places, it attains its full glory on walls or rocks where the sun turns stems and leaves brilliant crimson.

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