$4.75–$40.75
In stockIn stock1
trefle.io · Taken Jul 31, 2017 by Titouan Lorieul (cc-by-sa)
Onagraceae
Rosebay willowherb
Epilobium angustifolium
Also known as Pyrogennema angustifolium, Great willowherb, Chamaenerium angustifolium var. spectabile, Chamaenerion angustifolium
Zones 3–9Sun Partial SunWater ModerateCare Low
Native Plants · Edibles & Herbs · Wildflower · Fireweed · Pollinator · Native · Pink Flowers · Cottage Garden · Onagraceae · Meadow · Wildlife Garden · Medicinal
Beginner-friendlyMedicinalAttracts pollinators
Toxicity: dogs, cats, horses — keep out of reach and wear gloves when pruning.
In stock at 1 nurseryStock updated 9/6/2026
Rosebay willowherb (fireweed) is a resilient wildflower that produces striking spikes of magenta-pink blooms in summer and is beloved by pollinators. It grows well in partially shaded spots with average moisture and spreads readily by windborne seeds, so deadhead spent flowers if you wish to limit self-seeding. Once established it needs little attention, making it an excellent low-maintenance choice for naturalized or wildlife gardens.
Growing conditions
The details behind the basics
- Daily light
- 4 hours
- Watering
- Water moderately, keeping soil evenly moist but not waterlogged; established plants are relatively self-sufficient · Every 7-10 days
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 5–5.5
- Temperature
- -30°F to 85°F
- Cycle
- Perennial
Hardiness
USDA 3a-9b
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Form & growth
Mature size and habit
- Mature height
- 12 in – 5 ft
- Spread
- 2 ft
- Spacing
- 24 in apart
- Growth rate
- Moderate
- Root depth
- Medium
- Flowers
- No
- Foliage
- Fine
Ecology & origin
Where it belongs and what it brings
- Native to
- Afghanistan, Alaska, Albania, Alberta, Aleutian Is., Altay, Amur, Arizona, Arkansas, Assam, Austria, Baltic States, Bangladesh, Belarus, Belgium, British Columbia, Bulgaria, Buryatiya, California, Canary Is.
- Attracts
- Bees, Butterflies, Hummingbirds, Moths
Sources: trefle, usda, aspca
More Epilobium
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Epilobium angustifolium subsp. angustifolium
Epilobium angustifolium subsp. angustifolium
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Buy this plant
1 nursery carries it