Stevens County Noxious Weed Control Board
This web site will help you identify & control noxious weeds. Conventional & biological control
(BioControl) information and photographs  are here. Maps & related information are included.

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Common Reed
Phragmites australis                                 
Grass Family

Key identifying traits

  • Very large grass with stems that are woody and hollow; can reach heights to 12’ tall

  •  Leaves are lanceolate, 8-16” long

  • Has creeping rhizomes and sometimes stolons are present

  • Flowers are feathery, tawny or purplish, 6–16” long, with the branches ascending

Biology and ecology

  • A perennial plant primarily spreading by rhizomes but also by seed

  • It grows in marshes and swamps, on banks of streams and lakes, and around springs-likes standing water

  • There appears to be a native and non-native genotype of common reed in the U.S.  Please click here to read a full report of the two plants

  • Native Americans utilized the stems for arrows, basket weaving, sleeping mats, and carrying nets

  • Phragmites australis is found on every continent except Antarctica and is thought to have the widest distribution of any flowering plant although the origin of the plant is unknown

Control

Prevention – Learn to identify plants; start monitoring early in the season

Biological – No known biological control in our area

Cultural – Plant competitive grass or other cover crop

Mechanical – The plant can survive burning and cutting because of the hardy rhizomes; dredging has been used with some success at reducing population densities

Chemical – As a member of the grass family, only non-selective, grass killing herbicides will control it; control in or near water bodies may require special permits.  The PNW Weed Management handbook has no listings for chemical recommendations

Where found No sites of Common reed have been verified in the Stevens County to date.

MSdoc     PDF

Photos top & middle courtesy Mike Haddock, http://www.lib.ksu.edu/wildflower/


James H. Miller, USDA Forest Service, Bugwood.org

weedboard@co.stevens.wa.us
Last Edit: December 01, 2011
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