Lathyrus japonicus

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Lathyrus japonicus
Light:Full Sun
Moisture:Xeric Mesic
Hardiness:3
Soil pH:5.6-8.4
Height:2'
Blooms:Late Spring-Late Summer
Native to:
Nitrogen Fixer
Edible Rating:PFAF Edibility RatingPFAF Edibility Rating
Tea:Yes
Poisonous

Lathyrus japonicus (common name: beach pea)

Propagation: Pre-soak the seed for 24 hours in warm water and then sow in early spring in a cold frame[1]. When they are large enough to handle, prick the seedlings out into individual pots and plant them out in the summer.

If you have sufficient seed, then it can also be sown in situ in mid spring[1].

Division in spring. It may not transplant well so care should be taken[1].

Cultivation: An easily grown plant, succeeding in any moderately good garden soil[2]. It prefers a deep moist well-drained soil in a cool position[3]. Prefers a position in full sun, growing well on hot sunny banks[1].

The seed remains viable for 4 - 5 years in sea water[1].

This species has a symbiotic relationship with certain soil bacteria, these bacteria form nodules on the roots and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby[1].

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

Habitat: Sandy coasts from Alaska to N. California[4].

Edibility: Young plant - raw or cooked. An excellent sustenance[5].

Pollinators: Bees, lepidoptera

Soil: Can grow in light, medium, and heavy soils.

Drainage: Prefers well drained soil.

Wind: Tolerates maritime wind exposure

Seed Ripens: Late Summer-Mid Fall

Flower Type: Hermaphrodite

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

Links

References

  1. 1.0 1.1 1.2 1.3 1.4 1.5 Huxley, Anthony. The New Royal Horticultural Society Dictionary of Gardening. MacMillan Press, 1992.
  2. Chittendon, Fred. RHS Dictionary of Plants. Oxford University Press, 1951.
  3. Phillips, Roger and Martyn Rix. Perennials - The Definitve Reference. Pan Books, 1991.
  4. Hitchcock, Leo. Vascular Plants of the Pacific Northwest. University of Washington Press, 1955.
  5. Coffey, Timothy. The History and Folklore of North American Wild Flowers. Facts on File, 1993.