Fireweed
Epilobium angustifolium L.
- light
- Full sun
- water
- Medium
- tall
- 1.1 m
- wide
- 61 cm
Onagraceae
Also called Great Willow Herb, Red Fireweed, Wickup
Formerly Chamaenerion angustifolium, Chamerion angustifolium, Pyrogennema angustifolium
When it flowers
Not known yet in the tropics: too few flowering observations to read a season from.
If a child, a pet or anyone may have eaten a plant, contact a doctor or vet straight away, or call the National Poisons Information Centre (AIIMS, New Delhi) on 1800 116 117, free and open 24 hours.
Something wrong with it?About it
- Grows as
- PerennialKew's checklist, not yet checked
- Climate
- TemperateKew's checklist, not yet checked
- Wild in
- Temp. Northern Hemisphere to NE. Mexico, MoroccoKew's checklist, not yet checked
- Light
- Full sun (6 h or more)Read from NC State Extension and Wikipedia, checked by a majority of its sourcesBacked by both sources. Sources differ: NC State Extension full, part; Wikipedia full
- Height
- 61 cm to 1.5 mRead from NC State Extension and Wikipedia, checked by a majority of its sourcesBacked by both sources. Sources differ: NC State Extension 2–5 ft; Wikipedia 0.5–2 m
- Spread
- 30 cm to 91 cmRead from NC State Extension, one source
- Water
- Average: moist, well drainedRead from NC State Extension and Wikipedia, not yet checked: its sources are splitTied: no reading has a majority of the 2 sources, so all are kept for a person to settle. Sources differ: NC State Extension medium; Wikipedia high
- Flowers
- PinkRead from NC State Extension and Wikipedia, checked by a majority of its sourcesBacked by both sources. Sources differ: NC State Extension pink, purple; Wikipedia magenta, pink
- Coldest it survives
- -45.6 °C (USDA zone 2a)Read from NC State Extension, one source
Not known yet: heat, hottest it survives.
In other languages (4)
- Czech
- vrbovka úzkolistá
- German
- Schmalblättriges Weidenröschen
- French
- Epilobe en Épi
- Simplified Chinese
- 柳兰
Where this comes from
- Wikidata, read 2026-10-25, CC0-1.0
- Kew's checklist, read 2026-10-24, CC-BY-4.0
- NC State Extension, read 2026-10-25, fact, cited
- Wikipedia, read 2026-10-25, fact, cited
- Wikimedia Commons, read 2026-10-25, Public domain
- 3D model: Epilobium angustifolium (built for Vanagrha) by Vanagrha, own
A fact “checked by a majority of its sources” was settled by a vote of the pages it was read from, not by a person reading it; one marked “one source” rests on that page alone. Anything else not marked checked has not been checked yet. Where nothing is known, the page says so rather than guess.