Geranium phaeum var. phaeum 'Langthorns Blue'
dusky cranesbill 'Langthorns Blue'
'Langthorns Blue' is a clump-forming herbaceous perennial, to 60cm high, with deciduous green leaves blotched purplish-brown in the notches between the seven or nine lobes. Flowers, 2-2.5cm across, of reflexed violet-blue petals with darker veins above the paler bases, appear from late spring to early summer
Size
Ultimate height
0.5–1 metresTime to ultimate height
2–5 yearsUltimate spread
0.5–1 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Blue | Brown Purple Green | ||
|---|---|---|---|---|
| Summer | Blue | Brown Purple Green | ||
| Autumn | Brown Purple Green | |||
| Winter |
Position
- Full shade
- Full sun
- Partial shade
Aspect
South–facing or North–facing or East–facing or West–facing
Exposure
Exposed or Sheltered Hardiness
H7Botanical details
- Family
- Geraniaceae
- Native to GB / Ireland
- No
- Foliage
- Deciduous
- Habit
- Clump forming
- 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
Accepted
How to grow
Cultivation
Grow in sun or shade in moist but well-drained soil; good in damp shade
Propagation
Propagate by division in spring, or by basal softwood cuttings taken in spring and rooted with bottom heat
Suggested planting locations and garden types
- Cottage and informal garden
- Wildlife gardens
- Low Maintenance
- Underplanting of roses and shrubs
- Flower borders and beds
Pruning
Cut back flowered stems and old leaves to encourage fresh growth
Pests
May be susceptible to capsid bug, geranium sawfly, vine weevil, slugs and snails
Diseases
May be susceptible to a rust, downy mildews, leafy gall and a virus. Powdery mildews can be a problem in dry conditions
Get involved
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