The Knotweed Page!
  A web site devoted to information about Japanese Knotweed and related plant species
All About Knotweed   Taming the Wild Knotweed   Knotweed Literature  
News & Notes:
7/4/04: North American Knotweed Symposium scheduled for March 2005 in Vancouver, click here for details.
7/2/04: Updated Knotweed Nomenclature, now with foreign names!
6/27/04: New AP article, link in the Knotweed Lit section.
5/27/04: Site improvements are here, new content is on its way!
11/24/03: New, enhanced content on the "Knotweed Nomenclature" page.
10/31/03: Visit the new "Knotweed Literature" page to get links to articles and websites about knotweed.
6/18/03: There are now three Japanese knotweed items for sale at the Invasive Species Weblog store, check it out.
Thinking about planting Japanese Knotweed, Giant Knotweed, or Silver Lace Vine in your garden? Please reconsider. Even "non-invasive" cultivars can contribute to the general problem of knotweed invasion, because hybridization can occur. Also, consider planting native species instead!

Links to More Information about Japanese Knotweed

  Why reinvent the wheel?  Plenty of web sources on Japanese knotweed already exist, with information on its history, management, and lots of great photos.  Rather than spending time creating my own version, I've compiled a list of the best sites:

Comprehensive Sites


Fact Pages


Sites with Link Lists


Sites with Good Photos

  • Trace the growth stages of a Japanese knotweed rhizome, from spring resprout to fruiting, at The Knotweed Page's What Does it Look Like?
  • Visit the Mass Invaders Japanese knotweed photo gallery, 65 images and still growing!
  • The Virginia Tech Weed ID Guide has great photos of Japanese Knotweed

Other Good Links

  • History of the Introduction of Japanese Knotweed in Massachusetts (part of ConNE website)
  • Notes on Medical Attributes of Japanese Knotweed, by Joan Spainhour at Wilkes University
  • Description of Japanese Knotweed (plus recipes!!) from the books of "Wildman" Steve Brill (Note: if you decide to collect knotweed for eating, please be careful to consider how "pristine" the area is that you are collecting it from.  Many plants, including knotweed, can take up pollutants from the soil.)

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All photos, scanned images and graphics are the property of Jennifer Forman and may not be reproduced in any way without express permission from her.