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Plant guide

Pigeon Pea.

Cajanus cajan

Pronounced kuh-JAY-nus KAY-jan

Also known as Cajan, Catjan, Catjan Pea, Congo Pea, Congo-pea, Dhal Bean, Gungo Pea, No-Eye Pea

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Cajanus cajan
Photo by Malcolm Gould (CC BY) via gbif

The pigeon pea is a hardy perennial legume that is widely grown for its edible seeds. It is a fantastic choice for warm climates because it is quite drought tolerant. You will love how it adds a touch of tropical flair to your garden.

Another photo of Pigeon Pea
Photo by João Vitor Oliveira de Souza (CC BY) via iNaturalist

At a glance

Care level
Easy
Plant type
Perennial shrub
Light
Full sun
Indoor light
Direct sun
Water
Every 7 to 14 days
Mature size
3 to 12 feet
Growth rate
Fast
Hardiness
USDA 9 to 12
Bloom time
Late summer to autumn

Care

Plant this shrub in a spot that gets plenty of sun and has well draining soil. Keep an eye out for yellowing leaves, which might mean the soil is staying too wet. It is a tough plant that handles heat well.

Watering
Water deeply once the top few inches of soil feel dry to the touch.
Feeding
Apply a balanced fertilizer sparingly since this plant fixes its own nitrogen.
Pruning
Trim back the branches after harvest to keep the plant bushy and productive.
Repotting
Repot only if you are growing it in a container, otherwise it prefers being in the ground.
Soil
Well draining sandy or loamy soil
Soil pH
5.0 to 7.0
Temperature
15 to 35°C
Humidity
40 to 70%
Drought tolerance
High
Lifespan
Short-lived perennial, typically 3 to 5 years.
Fragrance
Light
Deer and rabbits
Moderate

Signs it needs repotting

  • Roots growing out of the drainage holes.
  • Stunted growth despite regular feeding.
  • Soil drying out very rapidly.

Safety

People
The raw seeds contain compounds that can cause digestive distress if eaten in large quantities.
Children
The pods and seeds are not inherently dangerous, but they should be kept away from small children to prevent choking.
Contact allergens
The fine hairs on the pods may cause mild skin irritation in sensitive individuals.
Airborne allergens
Pollen from the flowers can trigger seasonal allergies in some people.
Edibility
Pigeon peas must be cooked thoroughly before consumption to neutralize anti-nutritional factors.

How to identify it

  • Trifoliate leaves with silvery undersides
  • Yellow flowers with red streaks
  • Flat pods containing rounded seeds
  • Woody stems on mature plants
Height
1 to 3m
Spread
0.5 to 1.5m
Leaves
green, grey-green, semi-evergreen
Flowers
yellow, red, 1 to 2cm
Fruit
green, brown, purple, Autumn to winter

Problems to watch for

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    Growing it

    Propagation
    seed
    When to plant
    spring, early summer
    Overwintering
    In cooler climates, treat as an annual or bring pots indoors before the first frost. Protect from freezing temperatures to maintain the shrub structure.
    In containers
    It grows well in containers at least 40 centimeters deep.

    Seed

    1. Soak seeds in water for 12 hours to improve germination.
    2. Plant seeds 2 centimeters deep in well-draining soil.
    3. Keep the soil moist until seedlings emerge in 1 to 2 weeks.

    Plant pigeon peas alongside heavy feeders to naturally boost soil fertility.

    Grows well with

    • Maize · Pigeon peas fix nitrogen that benefits the nitrogen-hungry maize.
    • Sorghum · They make an excellent intercropping pair for soil health.

    Similar species

    • Cowpea · Another legume that serves similar roles as a cover crop.

    Science

    Family
    Fabaceae
    Genus
    Cajanus
    Order
    Fabales
    Class
    Magnoliopsida
    Native range
    Likely India or Africa, now pantropical.
    Conservation
    This species is widely cultivated and not of conservation concern.

    It thrives in poor soils by forming a symbiotic relationship with nitrogen-fixing bacteria.

    Value to wildlife
    nectar source, nitrogen fixing
    Pollinators
    bees, butterflies
    Uses
    culinary legume, cover crop, green manure, ornamental shrub

    Through the year

    JFMAMJJASOND
    Flowering
    Fruiting
    Foliage

    Ecological indicators

    Salinity
    2/9
    Soil reaction
    6/9
    Light
    8/9
    Temperature
    8/9
    Moisture
    4/9
    Nutrients
    3/9

    Taxonomy resolved against GBIF.

    Questions people ask

    Can I grow pigeon peas in a pot?
    Yes, they grow well in large containers if provided with full sun and good drainage.
    How do I know when to harvest?
    Harvest the pods when they are full and plump but still green for fresh use.

    Where the name comes from

    The name Cajanus comes from the Malay word 'katjang' for bean, while the common name pigeon pea refers to its historical use as feed for pigeons.

    Good to know

    • Pigeon peas are one of the most important pulse crops in the tropics.
    • The plant is highly drought tolerant once established.
    • It is a perennial shrub that is often grown as an annual.
    • The leaves are sometimes used as fodder for livestock.

    Also in

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    This guide was generated with AI on and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.