Okay, I "think" I have Floratam (a St Augustine variety). The only chemical that I know of that is safe to use on Floratam is Atrazine. Unfortunately, atrazine does not kill all of the weeds that are infesting my lawn (just kills the dollarweed and ...after a while... chickweed).

Does anyone have expertise or advice on weed control other than atrazine? Most of the commercial products out there for St Augustine grass say, "do not use on Floratam"