The Japanese knotweed (Fallopia Japonica) is originally from eastern Asia in places like China, Korea, and of course Japan. This plant was introduced to the United States ecosystem when it was brought over to us for ornamental purposes for lawn hedges. These plants were also intended for erosion control. This plant is highly invasive. It can crowd out all vegetation around it. It also has strong roots which can grow into concrete and break up foundations.
This plant is strong, it can survive in many different weather occurrences. It can survive in shade, drought, and high/low temperatures. Japanese knotweed is tough. It is a soldier.
Work cited: http://www.dnr.state.mn.us/invasives/terrestrialplants/herbaceous/japaneseknotweed.html
http://en.wikipedia.org/wiki/Japanese_knotweed
http://www.ecy.wa.gov/programs/wq/plants/weeds/aqua015.html
http://www.kingcounty.gov/environment/animalsAndPlants/noxious-weeds/weed-identification/invasive-knotweeds/japanese-knotweed.aspx
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