Root: Flowering rush has an
extensive root system that can break into new plants if roots are
disturbed. (2)Stem/Leaves: The stem is green and triangular in shape. The leaves can grow to be 3 ft. long and the tips are often spirally twisted. When under water, the leaves are limp. This is an aquatic species and often goes unnoticed because it is in the water. (2)
Flowers: The flowers grow in umbrella shaped clusters and each individual flower has three whitish pink petals. (2)
Seeds: The flowering rush does not commonly reproduce by seeds, rather, it reproduces by rhizomes. (2)
Spread: It is usually spread by people planting it in their gardens and this is likely how it wound up in Montana. It can spread over short distances, when in a water shed, by breaking off root pieces as well as rhizomes (under ground stems). (2)
Infestation: This plant is usually found in wet places, but can also grow in relatively dry places. (1)
Control Agents:
Biological: There are no legal biological controls in the U.S. yet - as of 2008. (1)
Chemical: Since this plant often grows in lakes, rivers, and streams, this form of control is disapproved of and destructive. Contact your County Weed Coordinator for information about how to do this properly. (1)
Cultural: Cutting and pulling will decrease the population if care is taken to remove all the roots. (1)