Im new to lawn care and herbicides and wanted to get an opinion on upcoming pre-emergents. Ive been following a university lawn plan for southern lawns but I havent found much info on a particular herbicide. For the Arkansas area which is where i live they recommend Simazine/Atrazine mix in November. Does anyone else do this around my neck of the woods in November? I was thinking something should be applied before November but I could be wrong. The lawns treated will mostly be centipede in my area.