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Bog Willowherb

Epilobium leptophyllum

Found in bogs, fens, seepages, and boggy meadows. Weakley, Flora of the Southeastern United States (2025), Northern Tier edition What its natural habitat tells you

42
Good

Native to West Virginia. How scores work Is it native here?

Profile 100%

Height
About 3.6 feet
Light
Full sun
Soil moisture
Moist to wet
Will it fit your yard?

Rare or protected plant. Specialist conservation planting; excluded from routine garden suggestions. Plant caution source

Hidden from default planting suggestions. Wildlife value and native status remain unchanged.

At a glance

Life cycle
Perennial
Bloom
April to October
Fruiting season
Summer to fall

Not yet recorded · Spread · Leaves

Recorded in 4 West Virginia counties.

Natural habitats

Places it grows wild. Not a planting requirement. Each habitat page lists the plants and wildlife also found there.

1 of 3

Mountain bogs and fens

Wet, open, peaty mountain wetlands fed by seepage, often with sphagnum moss.

Seeps and springs

Places where groundwater keeps the soil or rock wet, such as seepage slopes and spring runs.

Meadows

Open, grassy or flowery ground that is not wet, such as mountain meadows; wet meadows are separate.

All habitats

Also found with this plant

Wildlife whose habitat models include habitats this plant grows in, in West Virginia. Shared habitat, not food. 119 animals.

All wildlife of West Virginia

Ecological relationships

Who uses this plant?

What these records mean

15CaterpillarsGenus host records with ranges including WV

Genus host records with ranges including WV · Epilobium

  • Acronicta oblinitaSmeared Dagger
  • Amphion floridensisNessus Sphinx
  • Anarta trifoliiThe Nutmeg, Clover Cutworm
  • Anticlea multiferataMany-Lined Carpet
  • Eudryas unioPearly Wood-Nymph
  • Eulithis diversilineataLesser Grapevine Looper Moth
  • Eulithis gracilineataGreater Grapevine Looper
  • Hyles lineataWhite-Lined Sphinx
  • Hyppa xylinoidesCommon Hyppa
  • Melanolophia canadariaCanadian Melanolphia, Variable Redmarked Looper
Show all 15
  • Oidaematophorus eupatoriiEupatorium Plume Moth
  • Orthotaenia undulanaDusky Leafroller
  • Spargania magnoliataDouble-Banded Carpet
  • Trichodezia albovittataWhite-Striped Black
  • Dichomeris washingtoniella
Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
0BeesSoutheastern regional records
0Specialist beesPollen specialists
1BirdsRecorded genus food-resource interactions; not a state feeding claim

Recorded genus food-resource interactions; not a state feeding claim · Epilobium

  • Dendragapus obscurusDusky Grouse
Hurlbert, Olsen, Sawyer & Winner 2021, Avian Diet Database, Scientific Data 8: 260 (CC0)

Direct food only: birds recorded eating this genus across North America. Caterpillars on host plants also feed nesting birds. NC Native Plant Society: butterfly gardening

No records yet · Ants · Beetles · Flies · Adult butterflies / moths · Other wasps · Other insects

Growing and identification

Plant details

Family
Onagraceae
Flower color
Red
Growth rate
Slow
Growth habit
Single stem
Foliage color
Green
Fruit begins
Summer
Fruit ends
Fall
Growing sources and scope
Also known as

American Marsh Willow Herb; Bog Willow Herb

Conservation status

West Virginia rankS2S3
Global rankG5
WV statusNot verified
Federal statusNot verified

Conservation source Global and federal source

In your garden

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Sources