I have a property just north of Tampa that I'm trying to establish a pensacola bahia pasture. It was seeded last spring after it was rototillered to remove the weeds/brush that was there.. We didn't spray to kill weeds before seeding which was probably a mistake. Anyway, I plan on overseeding this spring and need some advice. I have a lot of weeds and was wondering when I should spray as well as what I should use. And should it be done before or after overseeding?