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Polygonum paronychia (Beach knotweed)

photo of beach knotweed
Copyright © 2006 Mary Jo Adams

This plant belongs to the knotweed or buckwheat family (Polygonaceae).  It has a low lying form with woody stems, tiny white or pale pink flowers that bloom from April to September, and 1–inch-long leaves with margins that roll under.  Beach knotweed is found on coastal dunes and sandy beaches from northern California to southern Vancouver Island.  It is native in the Pacific Northwest.  Other common names for it are black knotweed and smartweed.       

 

This page was created by Mary Jo Adams on 9/18/06.

 

 

photo of beach knotweed

 

photo of beach knotweed

photo of beach knotweed