You, John Cunliffe, harbor a very dangerous attitude. Apparently you knowledge of ecology is not only lacking, it's completely non-existent. I suggest you look up the meaning of terms like "monoculture" and "trophic cascades" and you very much need to look into how seriously detrimental invasive weeds are entire ecosystems, resulting in a loss of insect and animal habitat and causing decline of species in these areas. Plants like orange hawkweed destroying native plant communities is not in any way, shape, or form mother natures attempt to spread a species. Introduction of exotic plants is completely a side effect of human activity, either by accident or on purpose. "I wonder if someone was seed bombing the neighborhood... not big deal if they did, after all have done it many a times my self with wild flower seed bombs." If your are knowingly and purposefully spreading invasive species into wild areas, you deserve to be at least cited, if not prosecuted.

obviously its a bit aggressive.. but if you had a use for it elsewhere.. you could harvest a shovelful .. and go plop it somewhere else ... like your going to slow it down by treating it roughly .. lol .. [dig new hole first ... ] ken

It looks more like a fall blooming perennial aster, Symphyotrichum novae - angliae to me. When was this picture taken? Is the plant in the picture above blooming now? It really has all of the characteristics of a Dwarf Fall Aster but they don't start blooming until late August or September. It looks like good ol' Aster 'Purple Dome.'

Pretty common here and actually beneficial, so good to recognize. https://hort.extension.wisc.edu/articles/goldenrod-soldier-beetle/ tj