Safety note: This plant may be toxic to humans and pets. See toxicity details.
Leopard's-bane (Arnica acaulis) is a perennial herb known for its bright yellow, daisy-like flowers and traditional medicinal uses.
At-a-glance light, water, soil, and growing conditions from plant data
Full sun to partial shade
50% intensity
Prefers sunny locations but tolerates light shade, especially in hotter climates.
Consistent moisture
50% intensity
Keep soil evenly moist, avoid waterlogging.
Well-drained, Humus-rich
50% intensity
Cool to moderate
50% intensity
Thrives in temperatures between 15-24°C. Protect from extreme heat and frost.
Low feeding
25% intensity
Generally does not require much fertilizer; a light organic feed in spring is sufficient.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | Yes 5/5 intensity |
| Toxic for pets | Yes 5/5 intensity |
| Edible | No |
All parts of the plant are toxic if ingested.
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Arnica acaulis prefers consistently moist soil but dislikes waterlogged conditions. Water deeply when the top 2-3 cm of soil feels dry. Ensure good drainage to prevent root rot, especially during warmer months.
Reduce watering slightly in winter when the plant is less active.
Pruning is minimal for Arnica acaulis. Remove spent flower stalks after blooming to prevent seed formation and encourage further flowering.
In late autumn or early spring, trim back any dead or damaged foliage to maintain a tidy appearance. This helps the plant conserve energy.
Propagation is best achieved through division of established clumps in early spring or autumn. Carefully separate the rhizomatous rootstock, ensuring each section has at least one bud.
Alternatively, seeds can be sown outdoors in autumn or stratified indoors before spring planting, though division is more reliable.
Arnica acaulis is best left undisturbed in its preferred location once established, as it dislikes transplanting.
If repotting is necessary, typically for very young plants or to divide them, do so in early spring or autumn. Use a well-draining, humus-rich potting mix and handle the roots gently.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Leopard's-Bane (Arnica acaulis)
Where Leopard's-Bane (Arnica acaulis) 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 acaulis |
Similar in genus Arnica
Answers based on plant encyclopedia data
