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Epilobium angustifolium /Fireweed, Rosebay Willowherb

Epilobium angustifolium / Epilobium angustifolium
In the wild near Skagway, Alaska
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In the wild near Skagway, Alaska

Can become established in large masses

Growing in full sunlight were summers are cool

Seed capsules present in early fall

Pink to purplish flowers present in June to September

Seed capsules opening

From a distance the open seed capsules may be thought to be a flowers

Close-up of open seed capsules

Autumn color of foliage

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Scientific Name: Epilobium angustifolium
Common Name: Fireweed, Rosebay Willowherb
Leaf Type: Broadleaf
Hardiness Zone: 4, 5, 6, 7, 8, 9, 10 Determine Your Zone
Height: 2- 5 feet
Spread: 2 -3 feet
Bloom time: Summer
Flower color: Pink, Purple
Light Exposure: Sun, Part Sun
Drainage: Well drained, Moist
Rate of Growth: Fast
Water Requirement: Medium
Maintenance Level: Low
Landscape Categories:
Comments: Ordinarily grown where summers are cooler and often not seen further south than the mountains of North California and Georgia. This plant becomes dormant in long, hot summers. A species that spreads by underground rhizomaes but does not generally become an invasive pest.

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