| Scientific Name: | Persicaria campanulata |
| Common Name: | lesser knotweed |
| Family Name: | Polygonaceae |
| Origin: | S.E. Asia / Japan / China |
| Hardiness Zone: | Zone 5: (-29 to -23 °C) |
| Plant Type: | Herbaceous perennial |
| Mature Size: | 0.7 - 1.3m x 0.6 - 1.0m (height x width) |
| Habit: | Arching, Open, Spreading, Upright |
| Form: | Irregular, Oval - horizontal |
| Texture: | Medium |
| Landscape Uses: | Erosion control, Fall interest, Fragrance, Group or mass planting, Wetland - bogs |
| Exposure: | Full sun, Part sun/part shade, Filtered shade |
| Soil or Media: | Well-drained |
| Leaves: | Simple, Alternate, Soft flexible, Heavily veined, Pubescent, Elliptic, Lanceolate, Ovate, Ciliate, Incised |
| Flowers: | Panicle, White, Pink, Aug-Sep |
| Fruit: | Achene, Brown, Oct-Nov |
| Key ID Features: | |
| Leaves alternate, most ovate to lanceolate, (5-)10-15cm long x 3-6(-10)cm wide, dark green, pubescent, major veins off midrib thick and run parallel, margin entire and ciliate, panicles 3-5cm long, flowers sessile, ~3mm wide, white-pink Aug-Sep. | |