Vera I went looking because it resembled something I had seen in the past, puts out runners and the plant is worse than crabgrass? Grows about 2-3 feet tall?
No clue but I found this while doing an invasive species search on google images.
http://www.fgcupinnacle.com/pinnacle-articles/features/invasive-plants
Hope you find your answer from some smart dude or Judy.
My brother-in-law decided he would give his backyard grass a treat. Having been a farmer he knew bull manure should be really good for the soil. After spreading it all around liberally and putting out fresh grass seed he watered and watched his creation blossom. The bull manure had come from Home Depot in big bags, maybe in the fine print their was the notice "may contain a billion weed seeds"? Being so disgusted with the weeds he tried his best to nuke the whole backyard.
