Twining Screwstem
Bartonia paniculata
- Native to:
- Canada, United States
Bonnie Semmling





Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Gentianaceae
- Genus:
- Bartonia
- Species:
- Bartonia paniculata
- USDA Symbol:
- BAPA2
Growth Characteristics
- Life Cycle:
- Annual | Biennial
- Growth Habit:
- Forb/herb , Vine
- Height:
- 50 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Low
- Bloom Months:
- jul,aug,sep,oct
- Bloom Colors:
- white, cream
Wildlife Benefits
- Bees:
- ★☆☆☆☆ Documented bee visitation (GBIF)
Garden & Ecology Notes
- Wildlife Value:
- bees, small pollinators
- Deer Resistant:
- Yes
Soil Requirements
- Soil Type:
- sandy, acidic, nutrient-poor soil
- pH:
- 4.5 - 6.5 (acidic to slightly acidic)
- Drainage:
- excellent drainage required
- Moisture:
- consistently moist
- Notes:
- commonly found in bogs and wet meadows
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–30 days
- Notes:
- Seeds require light for germination. Surface sow on moist, acidic substrate and maintain consistent moisture.
The above propagation data sourced from Claude AI