Onagraceae
Bog willowherb
Epilobium leptophyllum
Also known as Epilobium squamatum, Swamp willowherb, Epilobium rosmarinifolium, Epilobium lineare f. umbrosum
Flowering Plants · Native Plants · Bog Plant · Native Wildflower · Wetland Plant · Pink Flowers · Rain Garden · Pond Margin · Wildlife Plant · Pollinator · Perennial · Onagraceae
Bog willowherb is a delicate native perennial that thrives in wet, boggy conditions such as pond margins, rain gardens, or consistently moist meadow soils. It produces small pink flowers through summer that attract bees, butterflies, and moths, making it a valuable plant for ecological restoration plantings. Its low stature and narrow leaves give it a fine texture in the landscape, and it spreads gently to fill wet areas over time.
Growing conditions
The details behind the basics
- Daily light
- 4 hours
- Watering
- Keep soil continuously moist or wet; suitable for boggy areas where standing water may occasionally occur · Every 3-5 days; requires consistently moist to wet conditions
- Maintenance
- Low
- Soil
- sandy loam
- Soil pH
- 4–6.5
- Temperature
- -25°F to 95°F
- Cycle
- Perennial
- Propagation
- Seed
Hardiness
USDA 4b-9b
Form & growth
Mature size and habit
- Mature height
- 10 ft – 30 ft
- Spread
- 15 ft
- Spacing
- 12 in apart
- Growth rate
- Slow
- Root depth
- Shallow
- Flowers
- Red
- Foliage
- Green · Medium
Ecology & origin
Where it belongs and what it brings
- Native to
- Alaska, Alberta, British Columbia, California, Colorado, Connecticut, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Maine, Manitoba, Maryland, Masachusettes, Michigan, Minnesota, Missouri, Montana
- Attracts
- Bees, Butterflies, Moths
Sources: trefle, usda
More Epilobium
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Epilobium angustifolium subsp. angustifolium
Epilobium angustifolium subsp. angustifolium
Partial Sun · Moderate · Fast
Square-stemmed willowherb
Epilobium tetragonum
Partial Sun · Moderate · Moderate
Hoary willowherb
Epilobium parviflorum
Partial Sun · Moderate · Moderate
American willowherb
Epilobium ciliatum
Partial Sun · Moderate · Moderate
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