Controlling Dollarweed and Clover in St. Augustine

Central Florida, St. Augustine, clover and dollarweed. The expert says dollarweed indicates overwatering. Forms underground mat, hard to kill. Image (imazaquin) reduces but yellows turf temporarily. Atrazine effective but slow, often restricted. Speedzone for St. Augustine has three active ingredients; one harms Floratam. Reduce irrigation to bare minimum, apply chemical accurately with sprayer, dye, fan jet. "Do it professionally or have a professional do it."