Mountain Arnica (Arnica montana)

Mountain Arnica

Arnica montana

Vibrant golden blooms light up alpine meadows, a hardy alpine perennial. Common names: Mountain Arnica, Wolf's Bane.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Full sun to partial shade; prefers cool, indirect alpine sunlight and avoids intense midday heat at low elevations
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Watering Keep soil evenly moist but well-drained; avoid waterlogging to prevent root rot in cool, damp conditions
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Temperature Hardy to -15°C; tolerates cool summer temperatures, avoid prolonged exposure to temperatures above 25°C
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Characteristics

  • Leaf: Basal rosette of ovate, fuzzy leaves; stem leaves are smaller, opposite, lanceolate
  • Flower: Daisy-like composite heads with golden yellow ray florets and central disc florets
  • Stem: Erect, hairy stems with few branching points
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Care Guide

Watering

Keep soil consistently moist; water when the top 2 cm of soil feels dry

Fertilization

Diluted balanced liquid fertilizer once every 4 weeks. Use low-nitrogen fertilizer to promote bloom production without excessive foliage growth

Eggshell powder topdress:Sprinkle finely ground, oven-dried eggshells around the plant base; avoid direct contact with stems to prevent fungal issues
Pruning
  • Deadhead spent blooms to encourage secondary flowering and redirect energy to root growth
  • Cut back flowering stems to the basal rosette after the blooming season to promote healthy regrowth
  • Remove yellowing or damaged leaves to improve air circulation and reduce disease risk
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; ingestion leads to gastrointestinal distress, lethargy, and oral irritation

Humans: Contains helenalin; ingestion causes nausea, vomiting, and dizziness; topical use may trigger skin irritation

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Garden Uses & Culture

Culture: Used in regulated topical herbal medicine; symbolizes protection in alpine folklore

Usage: Ornamental alpine garden plant; limited medicinal use for topical pain relief (under professional guidance)