Join Date: Jul 2010
Location: East Central Illinois
I'm also on a gardening forum and we discuss weeds, too-of COURSE!
All solutions above work. Use them ALL. Be patient. Your end goal is eliminate as many as possible from the property. Any that go to seed will produce more, so do this, if nothing else. If you're strapped for time, just cut them as low as possible or just cut the flowers off with a pruner. I've even had some success take a spade and digging down about 6 inches and cutting them with the shovel, too, but you should have dirt ready to fill in the hole it creates.
Those that you don't allow to reproduce in 2012 will reduce the number in 2013. Good luck bc it's a battle.
IMO, I avoid using any herbicides. Your horse, cat, dog or chicken--we have them all at MY house--could get sick from them. Plus, I'm allergic to them ALL.