I have this invasive weed popping up everywhere! Every year. It is impossible to pull out-feels cemented in-all I can do manually is cut it back but that does nothing. If left alone it grows about 2feet tall and it pops up every few inches. I think it's on runners but there are other invasive weeds too so can't be sure. Any ideas?
Your URI Cooperative Extension Master Gardeners can help you. See their contact information at http://web.uri.edu/mastergardener/gardening-and-environmental-hotline/