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Annual Biennial

Geranium robertianum
  • RHS Plants for pollinators

herb robert

An annual or biennial to 30cm, forming a rosette of deeply dissected, strongly aromatic leaves. Large, open sprays of pale pink flowers to 1cm across appear in summer and autumn. It can be found in woodland, hedgerows and coastal locations and be useful for ground cover in shaded areas, but self-seeds readily, with the potential to become a nuisance if not kept in check. Despite this, it can be a useful plant for hoverflies when grown within a wildlife garden

Other common names
death-comes-quickly
dragon's blood
see morefox geranium
fox grass
Jenny Wren
kiss-me-quick
knife and fork
little bachelor's buttons
little red robin
nightingales
pink bird's eye
pink pinafore
red bird's eye
red robin
redshanks
St Robert's herb
stinking Robert
wren flower
Synonyms
Geranium 'Dragon's Blood'

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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
1–2 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Loam
Chalk
Sand
Clay
Moisture
Moist but well–drained, Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Pink Green
Autumn Pink Green
Winter
Position
  • Full sun
  • Partial shade
Aspect

South–facing or North–facing or East–facing or West–facing

Exposure
Exposed or Sheltered
Hardiness
H6
Botanical details
Family
Geraniaceae
Native to the UK
Yes
Foliage
Deciduous
Genus

Geranium can be annuals, biennials and perennials, herbaceous or evergreen, with rounded, usually palmately lobed or divided leaves, and lax inflorescences of rounded, 5-petalled flowers

Name status

Correct

Plant range
Temp. N. Hemisphere

How to grow

Cultivation

Thrives in sun or part shade in any well-drained soil. See herb robert for further advice

Propagation

Self-seeds freely with the potential to become a nuisance

Suggested planting locations and garden types
  • Wildlife gardens
  • Wildflower meadow
  • Low Maintenance
  • Ground cover
Pruning

No pruning required

Pests

Generally pest-free

Diseases

May be susceptible to downy mildew and powdery mildews

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