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.