Pellitory-of-the-wall (Parietaria judaica)

Pellitory-of-the-wall

Parietaria judaica

Its tiny flowers hide in leaf axils, a quiet groundcover for stone cracks. Herbaceous perennial; common name: Pellitory-of-the-wall.

Partial sun
1–2/week
Beginner
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Plant Needs

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Sunlight Prefers partial shade to full shade; tolerates low indoor light but thrives in dappled outdoor shade
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Watering Water when the top 2 cm of soil is dry; avoid overwatering to prevent root rot in poorly drained soil
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Temperature Thrives in cool to temperate temperatures; avoid prolonged exposure to heat above 28°C
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Characteristics

  • Leaf: Oval to lanceolate, soft, light green, with fine hairs on undersides
  • Flower: Tiny, greenish-white, clustered in leaf axils, non-showy
  • Stem: Slender, branching, trailing or upright, covered in fine trichomes
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Care Guide

Watering

Keep soil slightly moist but not waterlogged

Fertilization

Diluted balanced feed once every 2 months. Avoid over-fertilizing to prevent leggy growth

Eggshell powder topdress:Crush dried eggshells into fine powder and sprinkle a thin layer on the soil surface to boost calcium levels and improve soil drainage
Pruning
  • Trim back overgrown stems to maintain a compact mat form
  • Remove dead or yellowing foliage to improve airflow
  • Cut back spent flower clusters after blooming to encourage new growth
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: No documented toxicity to cats

Humans: Pollen may trigger allergic rhinitis or skin irritation in sensitive individuals; no acute toxic ingestion risk

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental groundcover for stone walls and path cracks; traditional medicinal use for urinary tract support