| Scientific Name: | Butomus umbellatus |
| Common Name: | flowering rush |
| Family Name: | Butomaceae |
| Origin: | Central / west Asia, Europe |
| Hardiness Zone: | Zone 2: (-46 to -40 °C) |
| Plant Type: | Aquatic plant, Herbaceous perennial, Invasive plant |
| Mature Size: | 1.3 - 2.0m x 1.0 - 1.5m (height x width) |
| Habit: | Upright |
| Form: | Vase |
| Texture: | Medium - fine |
| Landscape Uses: | Container planting, Wetland - bogs |
| Exposure: | Full sun |
| Soil or Media: | Bog |
| Leaves: | Simple, Grass-like, Basal, Sessile, Soft flexible, Parallel venation, Glabrous, Lustrous, Linear, Entire |
| Flowers: | Umbel, Purple, Pink, Jul-Aug |
| Fruit: | Aggregate fruit, Follicle, Brown, Sep-Oct |
| Key ID Features: | |
| Leaves linear, most 60-90cm long x 1-2cm wide, 3-sided; inflorescences cymose, umbel-like with 20-25 pink-red florets, each 2-3cm wide and with 6 pistils, 9 stamens, pedicels 4-10cm long, peduncle up to 150cm long; follicles, 6 per floret, each about 1cm long. | |