Broadleaf Arnica
Arnica latifolia
- Native to:
- Canada, United States
Walter Siegmund (talk)
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Asteraceae
- Genus:
- Arnica
- Species:
- Arnica latifolia
- USDA Symbol:
- ARLA8
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb
- Height:
- 60 cm
- Light Requirements:
- Full Sun,Part Shade
- Drought Tolerance:
- Medium
- Bloom Months:
- jun,jul,aug
- Bloom Colors:
- yellow
Wildlife Benefits
- Bees:
- ★☆☆☆☆ Documented bee visitation (GBIF)
- Butterflies & Moths:
- ★☆☆☆☆ Documented Lepidoptera association (GBIF)
Reported Fauna Sightings
Bees: Black-tailed bumble bee (Bombus melanopygus), Fuzzy-horned bumble bee (Bombus mixtus), Two-form bumble bee (Bombus bifarius)
Garden & Ecology Notes
- Wildlife Value:
- bees, butterflies, small mammals
- Deer Resistant:
- Yes
Soil Requirements
- Soil Type:
- moist, well-drained, loamy soil
- pH:
- 5.5 - 7.0 (slightly acidic to neutral)
- Drainage:
- good drainage required
- Moisture:
- consistently moist
- Notes:
- Prefers open, sunny locations in mountainous regions
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–30 days
- Notes:
- Requires light for germination; seeds should be surface-sown or barely covered. Fresh seed germinates more readily than stored seed.
The above propagation data sourced from Claude AI
Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).
Source: Claude AI