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Knotweed; Japanese (Polygonum cuspidatum) is an invasive weed.

Japanese knotweed is a very aggressive species that is capable of crowding out all other vegetation .

Scientific Name Common Name Options
Polygonum cuspidatumKnotweed; JapaneseNAPIS Maps
News
12/14/2009 Science Students Take Backyard Vital Signs
09/00/2009 Invasive Plants from Pest to Pesto
08/05/2009 It's a Battle to Control Invasive Plants
07/15/2009 UK Considers Insect to Tackle Knotweed
07/07/2009 Meredith Learns to Fight off Alien Invaders
06/07/2009 Now You Know About Knotweed

LinksMedia
City of Chicago Guide to Land Based Invasives
Weeds Invade the Poconos
 
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