Myrtle-leaved Coriaria (Coriaria myrtifolia)

Myrtle-leaved Coriaria

Coriaria myrtifolia

Its glossy myrtle-like leaves hide deadly berries, a quiet danger in Mediterranean gardens. Evergreen toxic shrub.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Full sun to partial shade; tolerates coastal Mediterranean sunlight
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Watering Water deeply when top 2–3 cm of soil is dry; avoid waterlogging to prevent root rot
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Temperature Hardy to mild frosts; thrives in temperate Mediterranean climates
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Characteristics

  • Leaf: Opposite, oval, glossy dark green, myrtle-like, 2–5 cm long
  • Flower: Small, greenish-yellow, clustered in terminal racemes
  • Fruit: Red berries ripening to black, containing toxic alkaloids
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Care Guide

Watering

Keep soil consistently moist but not waterlogged

Fertilization

Apply balanced diluted fertilizer once monthly. Avoid over-fertilizing to prevent excessive foliage growth at the expense of fruiting

Eggshell powder top dressing:Crush dried eggshells into fine powder; sprinkle lightly around base of shrub to boost soil calcium levels
Pruning
  • Prune in late winter to remove dead or damaged branches and maintain shape
  • Thin dense growth to improve airflow and reduce fungal disease risk
  • Remove any suckers to prevent overcrowding
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; ingestion leads to vomiting, diarrhea, seizures, respiratory failure

Humans: Contains coriamyrtin; ingestion of berries causes severe neurological and gastrointestinal damage, potentially fatal

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Garden Uses & Culture

Culture: N/A

Usage: Historically used in traditional medicine (highly toxic, not recommended for modern use); ornamental shrub in Mediterranean gardens