Mediterranean Box Thorn (Lycium intricatum)

Mediterranean Box Thorn

Lycium intricatum

Silvery foliage glows in coastal sun, a tough evergreen shrub adapted to arid winds. Evergreen woody shrub; common name: Mediterranean box thorn.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; tolerant of coastal salt spray and intense summer heat
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Watering Allow soil to dry completely between waterings; highly drought-tolerant once established
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Temperature Hardy to mild frosts; thrives in warm, arid to semi-arid climates
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Characteristics

  • Leaf: Small, linear to oblong, silvery-green, densely packed on tangled stems
  • Flower: Pale lavender to white, funnel-shaped, 5-lobed, faintly fragrant
  • Stem: Thorny, tangled woody stems with greyish-brown, peeling bark
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Care Guide

Watering

Water deeply once every 7–10 days; avoid overwatering to prevent root rot

Fertilization

Diluted balanced feed once monthly. Use low-nitrogen feed to promote flowering rather than excessive foliage growth

Eggshell powder topdress:Crush dried eggshells to fine powder; sprinkle 1 tsp per plant around the base; water lightly to work into topsoil; avoid direct contact with stems
Pruning
  • Trim tangled stems in late winter to maintain a compact shape and improve airflow
  • Remove dead or damaged branches to encourage new, healthy growth
  • Thin overcrowded growth to promote better flowering and fruiting
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA-aligned: Non-toxic to cats with no reported adverse effects

Humans: Non-toxic to humans; small red berries are edible with tart flavor

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental xeriscaping; edible tart red berries for jams or fresh consumption