Fringed Willowherb
Epilobium ciliatum
- Native to:
- Aleutian Is., Argentina, Canada, Chile, Falkland Is., Greenland, Guatemala, Kuril Is., Labrador, Mexico, Prince Edward I., United States
iNaturalist: © tyler_miller (iNaturalist #167021393)






Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Onagraceae
- Genus:
- Epilobium
- Species:
- Epilobium ciliatum
- USDA Symbol:
- EPCI
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb
- Height:
- 150 cm
- Drought Tolerance:
- Low
- Bloom Months:
- jun,jul,aug,sep
- Bloom Colors:
- pink, white
Wildlife Benefits
- Bees:
- ★☆☆☆☆ Documented bee visitation (GBIF)
- Butterflies & Moths:
- ★☆☆☆☆ Documented Lepidoptera association (GBIF)
- Caterpillars:
- ★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)
Host Plant for Caterpillars
Eudryas brevipennis, Mompha franclemonti, Mompha powelli, White-lined sphinx moth (Hyles lineata)
Garden & Ecology Notes
- Wildlife Value:
- bees, butterflies, birds
- Fire Ecology:
- Fire adapted — tolerates or benefits from fire
- Fire Notes:
- Pioneer species that colonizes disturbed and burned areas readily; not fire-dependent but benefits from post-fire conditions.
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–30 days
- Notes:
- Seeds require light for germination; surface sow and do not cover.
The above propagation data sourced from Claude AI
Pre-treatment: None required
Establishment: This plant is generally distributed across most of the United States (excluding some south-eastern states) and Canada.
Source: npn.rngr.net