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Annual Biennial

Lathyrus sativus

Indian pea

A scrambling, annual, nitrogen-fixing climber, up to 1.2m high, with angular, winged stems, mid-green leaves divided into two narrowly elliptic, pointed leaflets, up to 15cm long and up to 1cm wide, and solitary flowers, up to 2.5cm across, usually sky-blue with a pink and white spot on the upper petal, sometimes pink or white, in late spring and early summer; the seeds are safely edible if they are first soaked overnight in lime water and then boiled

Other common names
blue-flower'd lathyrus
chichling-vetch
see morechickling pea
chickling vetch
dogtooth pea
grass pea
khesari
Riga pea

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Size
Ultimate height
1–1.5 metres
Time to ultimate height
1–2 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green Blue Pink White Green
Summer Green Blue Pink White Green
Autumn Green Green
Winter
Position
  • Full sun
Aspect

South–facing or East–facing or West–facing

Exposure
Exposed or Sheltered
Hardiness
H6
Botanical details
Family
Fabaceae
Native to GB / Ireland
No
Foliage
Deciduous
Habit
Climbing
Potentially harmful
Harmful if eaten. Wear gloves and other protective equipment when handling
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

Name status

Correct

Plant range
Europe

How to grow

Cultivation

Grow in full sun in moist but well-drained soil, and provide support or grow next to shrubs over which it can scramble. See sweetpea cultivation for further information.

Propagation

Propagate by seed, soaked for 24 hours before sowing, and sow directly in spring, 2.5cm deep, or sow in containers under cover in autumn or winter and then plant out in spring

Suggested planting locations and garden types
  • City and courtyard gardens
  • Cottage and informal garden
  • Patio and container plants
  • Banks and slopes
  • Flower borders and beds
  • Hedging and screens
  • Wall side borders
Pruning

No pruning required, but deadheading before seeds have formed will prolong the flowering season

Pests

May be susceptible to aphids, slugs, snails and thrips but generally pest-free

Diseases

Generally disease-free

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