Beach pea
Lathyrus japonicus · Fabaceae
The gardener's calendar
Ideal time to plant beach pea: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Foliage
- Deciduous
- Flowering
- June to August
- Mature size
- 30 to 60 cm in height
- Growth
- Fast
- Hardiness
- Very hardy (down to -15 °C)
- Origin
- Coasts of Japan and Northeast Asia
- Soil type
- Well-drained, tolerant of poor soils
Care
Sunlight
Beach pea thrives in full sun for generous blooming, but tolerates partial shade. It appreciates coastal or windy exposures, to which it adapts particularly well thanks to its maritime origin.
Watering
Water regularly during the growing period, especially in case of prolonged drought. Once well established, this plant tolerates drought very well and needs little water. In winter, reduce watering significantly.
Soil and Drainage
Well-drained soil is essential to prevent root rot. Beach pea accepts poor, sandy or gravelly soils, typical of coastal environments. It is not afraid of salinity, making it an excellent choice for seaside gardens.
Pruning and Maintenance
Requires little pruning; cut back lightly after flowering to maintain a compact shape and encourage denser branching. In late winter, remove dead or frost-damaged wood.
Fertilization
Like all legumes, beach pea fixes atmospheric nitrogen and requires only minimal fertilizer. A light application in spring is more than enough to support growth.
Diseases and Pests
Generally very robust, it may occasionally be affected by aphids or scale insects. Good drainage prevents fungal diseases from appearing. Good air circulation keeps the plant healthy.
Did you know?
Beach pea is a pioneering coastal plant that naturally stabilizes unstable dunes and slopes through its deep root system. In Japan and Korea, it has long been used in coastal restoration projects, and its characteristic pink and purple flowers bloom abundantly in summer, creating colorful carpets on beaches and maritime cliffs.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
Add this plant to my garden →Plants from the same family
- Chinese wisteriaWisteria sinensis
- Common broomCytisus scoparius
- Black locustRobinia pseudoacacia
- Common PeaLathyrus oleraceus
- Honey locustGleditsia triacanthos
- Hairy greenweedGenista pilosa
Tips generated and checked by Viridia — adapt them to your local climate.