Mile-a-Minute Vine (Persicaria perfoliata formerly Polygonum perfoliatum), an invasive Asian annual weed accidentally introduced from Asia into Pennsylvania, has been moving steadily northward. Until recently, the northern front of the invasion was southern New York State and southwestern Connecticut. In 2004 and 2005, populations were discovered in New Milford and Bridgewater, Connecticut. In 2007 two large populations were discovered in Newtown. There is also a very small population in Roxbury. So far, nothing has been reported between New Milford/Newtown and Greenwich/Westport.

Mile-a-Minute Vine (MAM) is a serious threat to agriculture, the economy, and the environment. It smothers fields, shrublands, and forest edges, killing most other vegetation...

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