invasive plant spreading like crazy

Question

When it 1st started to spread, it looked like some nice ground cover so I let it go for several years. Well, it got into the lilac and spread around in the bushes (tree/woods area scattered and now it’s going wild) and hard to kill even with multiple doses of herbicide. It’s spreading by maybe deer or mowing into the middle of my yard and random places, not sure how. What is it? How to kill it completely even near a creek?

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Answer 1

It is wild bishop's weed. Here are some articles that will give you ideas on how to remove:

http://www.ecosystemgardening.com/kill-the-bishops-weed.html
http://blog.pennlive.com/gardening/2013/06/how_to_get_rid_of_bishops_weed.html
http://www.nps.gov/plants/alien/fact/aepo1.htm