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Climber Wall Shrub

Lathyrus grandiflorus
  • RHS AGM

two-flowered everlasting pea

L. grandiflorus is a herbaceous, perennial climber, spreading by suckers, and growing about 1.5m tall. It produces pink-purple flowers in summer

Other common names
everlasting pea
large-flowered everlasting pea
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Size
Ultimate height
1.5–2.5 metres
Time to ultimate height
2–5 years
Ultimate spread
1–1.5 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained, Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Pink Green
Autumn Green
Winter
Position
  • Full sun
  • Partial shade
Aspect

South–facing or West–facing

Exposure
Exposed or Sheltered
Hardiness
H6
Botanical details
Family
Fabaceae
Native to the UK
No
Foliage
Deciduous
Habit
Climbing, Suckering
Potentially harmful
Ingestion may cause mild stomach upset. Wear gloves and wash hands after handling
Genus

Lathyrus can be annuals or herbaceous or evergreen perennials, mostly climbing, with pinnate leaves ending in a tendril, and showy pea-like flowers, fragrant in some species

Name status

Correct

Plant range
S Europe

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How to grow

Cultivation

Best allowed to scramble through shrubs or over banks and slopes. Can be grown in sun or partial shade in fertile well-drained soil. It has tendency to run, particularly on light sandy soils. See sweetpea cultivation for further information

Propagation

It seldom produces seeds. Propagate by division from suckers in early spring.

Suggested planting locations and garden types
  • City and courtyard gardens
  • Coastal
  • Cottage and informal garden
  • Flower borders and beds
  • Wall side borders
Pruning

Cut back to ground level in autumn

Pests

May be attacked by aphids, slugs and snails

Diseases

May be affected by powdery mildews, Fusarium wilt and sweet pea viruses

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