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Juncus effusus

Common Name: Soft Rush or Common Rush

Entry Author:  C. Westring
Description:  A slow spreading, clump forming, grass-like perennial that is possibly toxic to mammals.  Resistant to pollution.
No leaves
The greenish-brown, hermaphroditic flowers are not readily noticeable; lateral on the stem; 2 to 10 cm long
Develop inside a three celled egg-shaped capsule; 0.5 to 0.6 mm long; straw colored.  Seeds can remain viable for up to 60 years.
Stem: Erect, hollow, smooth, up to 1.4 m.
Branching Pattern:
  Emerge from a stout branching rhizome (usually 15-25 cm long)
Height:  Up to 1.5 meters
Conditions/Habitat/Kind of Forest:  Marshes, swamps, and seasonal wetlands preferably in direct sunlight.
Range: Temperate and sub-tropical areas of North America, Europe, and Asia. 
Conservation Status-US/ World Wide:  Invasive
Uses (Human):  The stems have traditionally been used for making floor mats and chair seats.  Also used for a wide variety of medicinal uses and to make paper.


Aquatic, Wetland and Invasive Plant Particulars and Photographs.
  2005.  University of Florida Center for Aquatic and Invasive Plants.  Accessed:  November 29, 2005.  <>

Aquatic and Wetland Vascular Plants of the Northern Great Plains.  February 23, 2005.  Northern Prairie Wildlife Research Center.  Accessed: November 29, 2005.  <>

Plants for a Future.  June 2004.  Accessed: November 29, 2005.   <>

USDA, NRCS. 2005. The PLANTS Database, Version 3.5 ( Data compiled from various sources by Mark W. Skinner. National Plant Data Center, Baton Rouge, LA 70874-4490 USA.

This page was created by: C. Westring, Muhlenberg College
Last updated 12/21/05