Quote:
Originally Posted by Natt
That bamboo stuff is called Japanese Knotweed. It is terribly invasive. Make sure that if you use any equipment to cut it down that NO pieces remain on the mower or whatever, because it will spread from just a small cutting. My dad used to try to kill it with herbicides, to no avail. Try vinegar. White vinegar mixed half and half with water. Dump it on well, so the roots get it too. Works for a small area, but it is difficult stuff. 
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I have some of it at my mill building in Manch and it is very hard to eradicate. This stuff grows right through 4 inches of asphalt we put down. When treating it I found that fall(after its done growing) is the best time so the herbicide gets to the roots instead of heading up the plant.