Vancouver Island Beggarticks
Bidens amplissima
- Native to:
- Canada
MeganPawluk
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Asteraceae
- Genus:
- Bidens
- Species:
- Bidens amplissima
- USDA Symbol:
- BIAM
Growth Characteristics
- Life Cycle:
- Annual
- Growth Habit:
- Forb/herb
- Height:
- 200 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Low
- Bloom Months:
- jul,aug,sep,oct
- Bloom Colors:
- yellow
Keystone Species Ranking
- Pollen Specialist Bee Keystone:
- ★★★☆☆ Native pollen specialist bee species supported by this genus (NWF)
Host Plant for Caterpillars
Bidens borer (Epiblema otiosana)
Garden & Ecology Notes
- Wildlife Value:
- birds, butterflies, bees
- Salt Tolerant:
- Yes
Soil Requirements
- Soil Type:
- rich, well-drained loamy soil
- pH:
- 5.5 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- consistently moist
- Notes:
- Prefers habitats near water bodies
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–28 days
- Notes:
- Seeds germinate readily in moist conditions; may benefit from cold stratification but not strictly required.
The above propagation data sourced from Claude AI