Claspleaf Twistedstalk
Streptopus amplexifolius
- Native to:
- Aleutian Is., Austria, Bulgaria, Canada, Corse, Czechia-Slovakia, France, Germany, Greenland, Italy, Japan, Korea, Kuril Is., Labrador, Myanmar, NW. Balkan Pen., Poland, Prince Edward I., Romania, Russia, Spain, Switzerland, Ukraine, United States
Walter Siegmund (talk)
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Liliaceae
- Genus:
- Streptopus
- Species:
- Streptopus amplexifolius
- USDA Symbol:
- STAM2
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb
- Height:
- 100 cm
- Light Requirements:
- Part Shade
- Drought Tolerance:
- Low
- Bloom Months:
- may,jun,jul
- Bloom Colors:
- white, greenish-white
Wildlife Benefits
- Bees:
- ★☆☆☆☆ Documented bee visitation (GBIF)
Garden & Ecology Notes
- Wildlife Value:
- birds, small mammals
- Fall Color:
- yellow
Soil Requirements
- Soil Type:
- rich, well-drained loamy soil
- pH:
- 5.5 - 7.0 (slightly acidic to neutral)
- Drainage:
- tolerates poor drainage
- Moisture:
- consistently moist
- Notes:
- prefers shaded, cool forest environments
Propagation & Germination
- Stratification:
- Warm then cold/moist stratification (double dormancy) — 60–120 days
- Germination Time:
- 30–365 days
- Notes:
- Seeds have double dormancy and may take over a year to germinate. Warm stratification followed by cold stratification improves germination rates.
The above propagation data sourced from Claude AI