| Scientific Name: | Epilobium ciliatum |
| Common Name: | common willowherb, fringed willowherb |
| Family Name: | Onagraceae |
| Origin: | North America |
| Hardiness Zone: | Zone 3: (-40 to -34 °C) |
| Plant Type: | Herbaceous perennial, Weed (horticultural) |
| Mature Size: | 1.3 - 2.0m x 1.0 - 1.5m (height x width) |
| Habit: | Arching, Open, Spreading |
| Form: | Oval - vertical |
| Texture: | Medium - fine |
| Landscape Uses: | Attract butterflies, Group or mass planting, Herb, Perennial border, Reclamation, Summer interest |
| Exposure: | Full sun |
| Soil or Media: | Well-drained |
| Leaves: | Simple, Opposite, Soft flexible, Pubescent, Lanceolate, Serrulate |
| Flowers: | Raceme, Violet, Purple, Pink, Jun-Jul-Aug-Sep |
| Fruit: | Capsule, Red, Brown, Silver, Aug-Sep |
| Key ID Features: | |
| Leaves mostly opposite, lanceolate, most blades 3-10cm long x 1-3cm wide, margin usually serrate, petioles 0-8mm long; flowers 9-12mm wide, 4 pink notched petals; fruit capsules, hairy, 1.5-10cm long. | |