Persian Stonecress (Aethionema thomasianum)

Persian Stonecress

Aethionema thomasianum

Its cloud of pale pink blooms carpets rock gardens with delicate charm. Low-growing evergreen perennial; common name: Persian stonecress.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun exposure for optimal flowering; tolerates light partial shade in hot summer climates
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Watering Water deeply when the top 2 cm of soil is dry; avoid waterlogging to prevent root rot
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Temperature Hardy to -15°C; prefers cool to temperate growing conditions with mild summer temperatures
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Characteristics

  • Leaf: Narrow, gray-green linear leaves arranged in dense rosettes
  • Flower: Clusters of tiny four-petaled pale pink to white blooms
  • Stem: Slender trailing stems that form a low, spreading mat
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Care Guide

Watering

Keep soil evenly moist during active growth

Fertilization

Diluted balanced feed once every 4 weeks. Use a low-nitrogen fertilizer to prevent leggy stem growth

Eggshell powder top-dressing:Crush dried eggshells into fine powder; sprinkle lightly on soil surface and water in to release nutrients
Pruning
  • Deadhead spent blooms to extend the flowering period
  • Trim back leggy stems after flowering to maintain a compact mat shape
  • Remove yellow or damaged leaves to improve airflow and plant appearance
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats

Humans: No known toxicity to humans

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental ground cover for rock gardens, alpine beds, and container edges