Allegheny stonecrop (Hylotelephium telephioides)

Allegheny stonecrop

Hylotelephium telephioides

Fleshy succulent foliage forms low, mat-like cushions. Drought-tolerant perennial; common name: Allegheny stonecrop.

Full sun
1/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; tolerates intense direct sun in cool climates; partial shade prevents leaf scorch in hot southern regions
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Watering Allow soil to dry completely between waterings; avoid overwatering to prevent root rot in poorly drained soil
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Temperature Extremely cold hardy to -30°C; tolerates high summer heat with adequate drainage
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Characteristics

  • Leaf: Fleshy, obovate to spatulate leaves; blue-green to gray-green, arranged in opposite pairs
  • Flower: Clusters of star-shaped pink to pale purple blooms; flat-topped inflorescences
  • Stem: Succulent, upright to trailing stems; turn reddish in full sun
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Care Guide

Watering

Water when top 5 cm of soil is fully dry; avoid wetting foliage

Fertilization

Diluted low-nitrogen feed once every 2 months. Avoid over-fertilization to prevent leggy, weak growth

Eggshell powder top dressing:Crush dried eggshells into fine powder; sprinkle a thin layer on soil surface to add calcium without risking over-fertilization
Pruning
  • Trim back leggy stems in early spring to encourage compact, mat-forming growth
  • Deadhead spent flower clusters to maintain tidy appearance and prevent self-seeding if desired
  • Remove damaged or rotting foliage promptly to reduce disease risk
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA confirmed non-toxic to cats; no reported toxicity

Humans: Non-toxic to humans; no known adverse health effects from ingestion or contact

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Garden Uses & Culture

Culture: N/A

Usage: Rock garden ground cover, green roof plant, container succulent arrangement