Northern Willowherb
Epilobium septentrionale
Jennifer Wheeler, BLM Arcata
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Onagraceae
- Genus:
- Epilobium
- Species:
- Epilobium septentrionale
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb
- Height:
- 6 in - 1 ft
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
- Bloom Months:
- aug, sep, oct, nov
- Bloom Colors:
- Red, Orange
- Ground Cover:
- Yes
Native Range
United States: California
Host Plant for Caterpillars
Heliodines extraneella, White-lined sphinx moth (Hyles lineata)
Soil Requirements
- Soil Type:
- moist, well-drained sandy loam
- pH:
- 5.5 - 7.0 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- consistently moist
- Notes:
- prefers riparian zones and stream banks