any of the broadleaf weedkillers from Bonide, Ortho or Bayer will kill lespedeza....but your FIRST job is to make the grass more vigorous so it chokes out the weeds.

You are just on the cusp of last time for fertilizing St. Augustine, Charlie. I would focus on getting your St. Augustine healthy first, or there is just going to be more chance for opportunism where the invaders have died out.

Charlie, wouldn't the rain wash away the fertilizer? Would it be better to put the fertilizer out just after the rain, so the ground is damp, but runoff doesn't wash it away? (Just a thought). I've been trying to build up my lawn this summer, too.

@Elise: A downpour might wash away the fertilizer, but a good, regular rain will work the chemicals into the soil, which is where you want them. If you water after a rain, the fertilizer may stick to the leaves of the grass, potentially burning them.

@Charlie: You're welcome. Good luck with your lawn.

@Charlie, follow the label directions for the fertilizer. Using more isn't better. To really customize your fertilizer you should have a soil test done via the University of Georgia's Extension Service. They cost $15 and are well worth the investment. I don't think you have time right now since the clock is ticking in regard to fertilizing, but this would be very good information to have on hand when spring comes around. Here a link for info: ...»

You're welcome Charlie. The extension office is a great resource to have so nearby.