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Climber Wall Shrub

Lathyrus nervosus

Lord Anson's blue pea

L. nervosus is a herbaceous, perennial climber with prominently-veined, leathery, grey-green leaves terminating in a tendril. The scented, purplish-blue flowers appear in small clusters on long stems in summer

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Size
Ultimate height
2.5–4 metres
Time to ultimate height
2–5 years
Ultimate spread
0.5–1 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained, Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green Grey Silver
Summer Blue Green Grey Silver
Autumn Green Grey Silver
Winter
Position
  • Full sun
  • Partial shade
Aspect

West–facing or South–facing

Exposure
Sheltered
Hardiness
H3
Botanical details
Family
Fabaceae
Native to the UK
No
Foliage
Deciduous
Habit
Climbing
Potentially harmful
Acute 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 America

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How to grow

Cultivation

Needs fertile, well-drained soil in full sun or light shade, and can be trained up a support, or be allowed to scramble. Will need winter protection in all but mild areas. See sweetpea cultivation for further information

Propagation

Propagate by seed

Suggested planting locations and garden types
  • City and courtyard gardens
  • Mediterranean climate plants
  • Cottage and informal garden
  • Patio and container plants
  • 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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