Natal Orange (Strychnos spinosa)

Natal Orange

Strychnos spinosa

Its thorny branches hold tart edible fruit, a bridge between wild forage and ornamental use. Evergreen spiny shrub or small tree; common names: Natal Orange, Monkey Orange.

Full sun
1/week
Moderate
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Plant Needs

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Sunlight Requires full sun to partial shade; full sun supports optimal fruit production and dense foliage growth
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Watering Drought-tolerant; water deeply but infrequently, allowing the top 15–20 cm of soil to dry completely between waterings
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Temperature Hardy to mild frost; prefers warm temperate to subtropical climates; protect from temperatures below 5°C to prevent leaf damage
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Characteristics

  • Leaf: Opposite, oval to elliptical, glossy dark green, leathery texture
  • Flower: Small, creamy white, fragrant, clustered in leaf axils
  • Stem/Bark: Grey-brown bark with sharp, paired spines at leaf nodes
  • Fruit: Round, yellow-orange when ripe, with fleshy edible pulp surrounding toxic hard seeds
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Care Guide

Watering

Water deeply every 7–10 days during prolonged dry spells

Fertilization

Apply diluted organic feed once monthly. Use low-nitrogen, potassium-rich feed to support fruit development

Composted banana peel tea:Steep fully composted banana peels in water for 24 hours, dilute 1:20, and apply as a root drench; avoid raw peels to prevent pest infestations
Pruning
  • Wear thick protective gloves to avoid injury from sharp spines
  • Remove dead, diseased, or crossing branches in late winter to improve airflow
  • Trim overcrowded growth to maintain desired shape and sunlight penetration
  • Cut back overly long branches to encourage compact, bushy growth
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Highly toxic; ingestion may cause seizures, muscle rigidity, respiratory failure, and potential death

Humans: Contains strychnine and brucine alkaloids; ingestion of seeds or unripe fruit can cause severe neurological effects and may be fatal in large doses

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Garden Uses & Culture

Culture: Used in traditional Southern African medicine to treat digestive ailments and skin conditions

Usage: Edible ripe fruit pulp for jams and juices; ornamental spiny hedge for security; foraged food source for wildlife