What is this and...................
is it going to take over my garden? I traded for it in the spring. The guy I got it from called it 'Mile high Daisy' because Denver was the first place he ever saw it. Of course, that was no help in identifying it. It is now 6' tall and blooming. It has put out 3 runners that are also blooming. I suspect it is a wild flower of some sort. The pictures are of one of the runners.