Lathyrus occidentalis subsp. occidentalis — Climbing

Overview

Lathyrus occidentalis subsp. occidentalis is a climbing annual biennial in the genus Lathyrus, part of the Fabaceae family, with deciduous foliage. Lathyrus occidentalis subsp. occidentalis grows best in full sun, and tolerates most soils and any pH. Its UK hardiness is rated H3. Suggested uses include city and courtyard gardens, cottage and informal garden, hanging basket and patio and container plants.

About

Lathyrus occidentalis subsp. occidentalis is a climbing annual or biennial cultivar within the Lathyrus genus, known for its pinnate leaves ending in tendrils and pea-like flowers. This deciduous plant thrives in full sun and prefers sheltered positions with fertile, moisture-retentive, well-drained soil, suitable for a range of soil types and pH levels. Hardy to UK zone H3, it is ideal for city and courtyard gardens, cottage and informal settings, as well as containers and hanging baskets. Its season of interest spans spring through autumn, offering extended garden appeal.

Growing conditions

Best soil and position for Lathyrus

Sunlight: Full sun
Soil type: Chalk, Clay, Loam, Sand
Soil pH: Acid, Alkaline, Neutral
Soil moisture: Moist but well-drained
Aspect: East-facing, South-facing, West-facing
Exposure: Sheltered
UK hardiness: H3

Plant details

Lathyrus occidentalis subsp. occidentalis size, habit and characteristics

Plant type: Annual Biennial
Habit: Climbing
Foliage: Deciduous
Suggested uses: City and courtyard gardens, Cottage and informal garden, Hanging basket, Patio and container plants

Care notes

Pruning and caring for Lathyrus occidentalis subsp. occidentalis

Propagation: Propagate by sowing seed in pots or rootrainers in autumn or spring and planting out in April, or sow seed directly into the soil in April. See sowing seeds indoors for further advice
Pest resistance: May be susceptible to aphids, slugs, snails and thrips
Disease resistance: May be susceptible to powdery mildews, fusarium wilt, sweetpea viruses

Frequently asked questions

Where is the best place to plant Lathyrus occidentalis subsp. occidentalis?

Lathyrus occidentalis subsp. occidentalis prefers full sun. It suits sheltered positions.

What soil does Lathyrus occidentalis subsp. occidentalis need?

Lathyrus occidentalis subsp. occidentalis is adaptable and grows happily in most soil types, including chalk, clay, loam and sand. It is happy in soil of any pH. Aim for soil that stays moist but well-drained.

Is Lathyrus occidentalis subsp. occidentalis hardy in the UK?

Lathyrus occidentalis subsp. occidentalis has an RHS hardiness rating of H3, meaning it is half-hardy, tolerating -5 to 1°C, and may need winter protection in colder areas.

How do I propagate Lathyrus occidentalis subsp. occidentalis?

Propagate by sowing seed in pots or rootrainers in autumn or spring and planting out in April, or sow seed directly into the soil in April. See sowing seeds indoors for further advice.

More in the Lathyrus genus

Browse all Lathyrus →