About
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.
About the 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
Growing conditions
SunlightFull sun, Partial shade
Soil typeChalk, Clay, Loam, Sand
Soil pHAcid, Alkaline, Neutral
Soil moistureMoist but well-drained, Well-drained
AspectWest-facing, South-facing
ExposureSheltered
UK hardinessH3
Plant details
Plant typeClimber Wall Shrub
HabitClimbing
FoliageDeciduous
Height2.5-4 metres
Spread0.5-1 metres
Time to full height2-5 years
Suggested usesCity and courtyard gardens, Mediterranean climate plants, Cottage and informal garden, Patio and container plants
Native toS America
FragranceFlower
ToxicityPods and seeds are not edible. Wear gloves and other protective equipment when handling. Pets: Pods and seeds are not edible. For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Care notes
CultivationNeeds 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
PruningCut back to ground level in autumn
PropagationPropagate by seed
Pest resistanceMay be susceptible to aphids, slugs and snails
Disease resistanceMay be susceptible to powdery mildews, Fusarium wilt and sweet pea viruses