Yellow Thimbleweed
Anemonastrum richardsonii
- Native to:
- Aleutian Is., Canada, Greenland, Labrador, Russia, United States
iNaturalist: © jauntingjan (iNaturalist #164290314)
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Ranunculaceae
- Genus:
- Anemonastrum
- Species:
- Anemonastrum richardsonii
- USDA Symbol:
- ANRI
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb
- Height:
- 30 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Low
- Bloom Months:
- jun,jul,aug
- Bloom Colors:
- yellow, greenish-yellow
Garden & Ecology Notes
- Wildlife Value:
- pollinators
Soil Requirements
- Soil Type:
- moist, well-drained, organic-rich soil
- pH:
- 5.5 - 7.0 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- consistently moist
- Notes:
- prefers cool, shaded environments
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–45 days
- Notes:
- Seeds benefit from cold-moist stratification. Germination may be erratic and slow even under ideal conditions.
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