Wild dill or some other parsley relative? http://www.flickr.com/photos/76284694@N02/7162971691/in/photostream Second Plant: http://www.flickr.com/photos/76284694@N02/7348182046/in/photostream Common Groundsel or thistle plant? http://www.flickr.com/photos/76284694@N02/7345459528/in/photostream These were taken around last year in Michigan. I never got around to posting them here.
#1 is certainly in the family Apiaceae, but not Dill, that has much finer, nearly thread-like leaflets.