Also known as Chamisso Arnica · Chamisso's Arnica · Leafy Arnica
Leafy Leopardsbane (Arnica chamissonis) is a perennial herb native to western North America, known for its bright yellow daisy-like flowers and medicinal uses.
At-a-glance light, water, soil, and growing conditions from plant data
Full Sun to Partial Shade
75% intensity
Prefers at least 6 hours of direct sunlight daily.
Moderate
50% intensity
Keep soil consistently moist but well-drained.
Well-drained soil
50% intensity
Moderate
50% intensity
Prefers cool to moderate temperatures, hardy in USDA zones 4-8.
Outdoor
50% intensity
Low
25% intensity
Requires minimal feeding; over-fertilizing can be detrimental.
Safety information from plant toxicity data
| Attribute | Value |
|---|
Non-toxic
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Keep the soil consistently moist but not waterlogged. Water deeply when the top 2-3 cm of soil feels dry. Reduce watering in winter, allowing the soil to dry out slightly between waterings.
Ensure good drainage to prevent root rot, especially in containers.
Deadhead spent flowers to encourage more blooms and prevent self-seeding if desired. In late autumn or early spring, trim back any dead or damaged foliage to maintain a tidy appearance and promote new growth.
Avoid heavy pruning, as Arnica chamissonis prefers a more natural form.
Propagate from seeds sown in autumn or early spring, either directly outdoors or in a cold frame. Division of established clumps in spring or autumn is also effective.
Ensure good air circulation and avoid disturbing the roots excessively during transplanting.
Repot container-grown plants every 2-3 years, or when they become root-bound. Use a well-draining potting mix, preferably one with a good proportion of sand or grit.
Repot in spring before new growth begins, handling the root ball gently to minimize stress.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Leafy Leopardsbane (Arnica chamissonis)
Where Leafy Leopardsbane (Arnica chamissonis) is found
Density
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Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Arnica |
| Species | Arnica chamissonis |
Similar in genus Arnica
Answers based on plant encyclopedia data
