Beach Pea, Smallflower beach pea

Lathyrus japonicus

Physical Characteristics

Lathyrus japonicus is a PERENNIAL growing to 0.6 m (2ft). See above for USDA hardiness. It is hardy to UK zone 3. It is in flower from May to August, and the seeds ripen from August to October. The species is hermaphrodite (has both male and female organs) and is pollinated by Bees, Lepidoptera (Moths & Butterflies). It can fix Nitrogen. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It cannot grow in the shade. It prefers dry or moist soil. The plant can tolerate maritime exposure.

Distribution

W. and N. Europe, E. Asia - China. N. America.

Habitats

Cultivated Beds;

Edible Uses

Edible Parts: Leaves Edible Uses: Young plant - raw or cooked. An excellent sustenance[207].

Medicinal Uses

None known

Known Hazards

The seed contains a toxic amino-acid which, in large quantities, can cause a very serious disease of the nervous system known as 'lathyrism'. The seed is said to be perfectly safe and very nutritious in small quantities, but should not comprise more than 30% of the diet[65, 76].