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American willowherb (Epilobium ciliatum)

Common Name: American willowherb
Common Name Synonym: glandular willowherb
Scientific Name: Epilobium ciliatum Raf. Epilobium glandulosum
Family Name: Onagraceae - Evening Primrose Family

Life Cycle

native perennial, reproducing by seed and creeping roots

Stems

upright, solitary below and freely branching above, hairy, often granular above

Seedlings of American Willowherb
Seedlings of American Willowherb
Seedlings of American Willowherb
Seedlings of American Willowherb
Seedlings of American Willowherb

Leaves

opposite and in basal rossette, narrow lanceolate to broad ovate, serrated, sunken leaf veins, short petiole or almost sessile

Flowers

4-petaled, white to pale pink, small, petals with single notch; clusters above

Flowers of American Willowherb
Flowers of American Willowherb
Flowers of American Willowherb

Seedpods

 erect, linear, hairy, ridged longwise, split in 4’s when mature, seeds with tuft of white hairs

Seedpods of American Willowherb
Seedpods of American Willowherb
Seedpods of American Willowherb

Publications & Resources

  • Fact Sheets
  • Professional Disease Guide
  • Professional Insect & Mite Guide
  • Nursery Best Management Practices (BMP) Manual
  • Garden Calendar
  • Useful Links
  • Association Certification
  • Pesticide License Information
  • Pesticide Resources
  • Nutrient Management
  • Plant Identification
  • Weed Identification

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