Spiny Whitlow-wort (Paronychia echinulata)

Spiny Whitlow-wort

Paronychia echinulata

Tiny, resilient blooms dot rocky slopes, a quiet desert gem. Low-growing mat-forming perennial.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun exposure preferred; tolerates partial shade in extreme hot climates
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Watering Allow soil to dry completely between waterings; highly drought-tolerant
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Temperature Thrives in warm dry conditions; tolerates light frost down to 5°C
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Characteristics

  • Leaf: Tiny linear fleshy green leaves with spiny tips, arranged in opposite pairs
  • Flower: Clusters of small white/pale pink five-petaled blooms
  • Stem: Slender prostrate stems forming tight, low mats
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Care Guide

Watering

Water sparingly only when soil is fully dry; avoid overwatering

Fertilization

Diluted balanced feed once every 2 months. Minimal fertilization needed; avoid high-nitrogen feeds

Eggshell powder topdressing:Sprinkle crushed, baked eggshells on soil surface to add calcium and improve drainage; avoid direct contact with stems
Pruning
  • Trim back dead foliage in early spring to stimulate new growth
  • Thin overcrowded mats to improve airflow and prevent fungal growth
  • Remove spent flower heads to maintain a tidy 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: Ground cover for rock gardens, xeriscaping, and container edges