You should mow 2-3 times before spraying, but the temps will get it by then most likely. Just be ready for next year in JulyChamber bitter, interesting. I have a flower bed that has a bunch of it growing and it's moving into the yard. I notice it has tons of little seeds all over the leaves. What a pain. Thanks for the info.
I seeded about 3 weeks ago, Would it be ok to spray now, or will it hurt the young grass?