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Geranium robertianum (Herb robert)

Beginner
skill rating
1 hour care
per year
0.5m
Max height
1m
Max spread
2-5 years
To maturity

Plant details

Botanical name

Geranium robertianum

Other names

Puck, Wren flower, Granny-thread-the-needle, Hop-o'my-thumb, Bloodwort, Robin-in-the-hedge, Herb robert, Geranium 'Dragon's Blood'

Genus

Geranium Geranium

Species

G. robertianum - G. robertianum is a hardy perennial with hairy stems bearing finely divided, bright-green foliage and small, pink flowers.


Geranium robertianum is: Deciduous

Habit

Clump-forming, Rosette

Flower

Pink in Summer; Pink in Autumn

Foliage

Bright-green in Summer; Red in Autumn

How to care

Watch out for

Specific pests

Capsid bug , Sawflies , Slugs , Snails , Vine weevil Capsid bug , Sawflies , Slugs , Snails , Vine weevil

Downy mildew , Powdery mildew Downy mildew , Powdery mildew

General care

Pruning

Remove stems once flowered and old leaves to encourage the production of new leaves and flowers.

Propagation methods

Basal cuttings, Division


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Where to grow

Geranium robertianum (Herb robert) will reach a height of 0.5m and a spread of 1m after 2-5 years.

Suggested uses

Banks and Slopes, Beds and borders, Bees (attract & feed bees), City, Containers, Cottage/Informal, Ground Cover, Low Maintenance, Underplanting, Wildlife

Cultivation

Best planted in most moderately fertile soil (apart from waterlogged) in either full sun or partial shade. Shade is tolerated.

Soil type

Chalky, Clay, Loamy, Sandy (will tolerate most soil types)

Soil drainage

Well-drained, Moist but well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

North, South, East, West

Exposure

Exposed, Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

Companion plants

We do not currently have companion plants added for this plant.

Botanical name

Geranium robertianum

Other names

Puck, Wren flower, Granny-thread-the-needle, Hop-o'my-thumb, Bloodwort, Robin-in-the-hedge, Herb robert, Geranium 'Dragon's Blood'

Genus

Geranium Geranium

Species

G. robertianum - G. robertianum is a hardy perennial with hairy stems bearing finely divided, bright-green foliage and small, pink flowers.

Foliage

Deciduous

Habit

Clump-forming, Rosette


Colour

Flower

Pink in Summer; Pink in Autumn

Foliage

Bright-green in Summer; Red in Autumn


How to care

Watch out for

Specific pests

Capsid bug , Sawflies , Slugs , Snails , Vine weevil

Specific diseases

Downy mildew , Powdery mildew

General care

Pruning

Remove stems once flowered and old leaves to encourage the production of new leaves and flowers.

Propagation methods

Basal cuttings, Division


Monthly care advice


Where to grow

Geranium robertianum (Herb robert) will reach a height of 0.5m and a spread of 1m after 2-5 years.

Suggested uses

Banks and Slopes, Beds and borders, Bees (attract & feed bees), City, Containers, Cottage/Informal, Ground Cover, Low Maintenance, Underplanting, Wildlife

Cultivation

Best planted in most moderately fertile soil (apart from waterlogged) in either full sun or partial shade. Shade is tolerated.

Soil type

Chalky, Clay, Loamy, Sandy (will tolerate most soil types)

Soil drainage

Well-drained, Moist but well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

North, South, East, West

Exposure

Exposed, Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

USDA zones

Zone 9, Zone 8, Zone 7, Zone 6

Defra's Risk register #1

Plant name

Geranium robertianum (Herb robert)

Common pest name

Green semi-looper

Scientific pest name

Chrysodeixis eriosoma

Type

Insect

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

3

Impact (1 is very low - 5 is very high)

3

General biosecurity comments

Polyphagous moth pest which is morphologically identical to a pest already established in the UK in protected environments and being controlled by IPM. Not expected to cause greater impacts than other species of Chrysodeixis in the UK.

About this section

Our plants are under greater threat than ever before. There is increasing movement of plants and other material traded from an increasing variety of sources. This increases the chances of exotic pests arriving with imported goods and travellers, as well as by natural means. Shoot is working with Defra to help members to do their part in preventing the introduction and spread of invasive risks.

Traveling or importing plants? Please read "Don't risk it" advice here

Suspected outbreak? Click here for contact details to report to the relevant authority.

Date updated: 7th March 2019 For more information visit: https://planthealthportal.defra.gov.uk/

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This plant likes... Garden match
Soil types: Chalky, Clay, Loamy, Sandy (will tolerate most soil types) Tell us...
Soil drainage: Well-drained, Moist but well-drained Tell us...
Soil pH: Acid, Alkaline, Neutral Tell us...
Light: Partial Shade, Full Sun Tell us...
Aspect: North, South, East, West Tell us...
Exposure: Exposed, Sheltered Tell us...
Hardiness: Hardy (H4) Tell us...

DISCUSS THIS PLANT

Geranium robertianum

It has a scent which some find unpleasant, and often lasts through the winter in southern Britain. It is common on shaded banks, hedgerows, woods and coastal shingle throughout the country. It will… read more

There is 1 active discussion about Geranium robertianum (Herb robert)

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