flowering rush

Alismatales > Butomaceae > Butomus umbellatus L.

Flowering rush is a rhizomatous perennial that grows on the margins of slow moving waterways. This plant can reach from 1-5 ft. (0.3-1.5 m) in height and can survive in water of up to 9.8 ft. (3 m) deep. The leaves are linear, up to 3.2 ft. (1 m) long and triangular in cross-section. Flowering occurs in June to August, when umbels of small, 3/4-1 in. (1.9-2.5 cm) wide, pink to white flowers develop. Seeds have long beaks, but rarely germinate. This plant spreads mostly from rhizomes and occurs in wet areas with muddy soil, such as marshlands, lakes and streams. Flowering rush is native to Eurasia and was first found in the United States in 1918.


Identification, Biology, Control and Management Resources


Selected Images from Invasive.org

Click on each thumbnail to download the image at 1536x1024 resolution or below for available resolutions.
Use 768x512 for Microsoft PowerPoint and use 1536x1024 for Prints and Publications.

Flower(s);
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
768x512

Fruit(s);
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
768x512

Root(s);
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
768x512

Infestation;
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
768x512

Seed(s);
Steve Hurst, USDA NRCS PLANTS Database, Bugwood.org
768x512 / 1536x1024

Invasive Reference(s):

Check Invasive.org for most current lists.
  • Connecticut - Noxious Weed Law
  • Vermont - Noxious Weed Law
  • Washington - Noxious Weed Law
  • Invasive Plants of the Upper Midwest
  • Invasive Plant Atlas of New England
  • Midwest Invasive Plant Network


External Links


footer line
USDA Forest Service Bugwood University of Georgia