I live in Dallas area and need advice on getting control of weeds in my yard. The yard is 17 years old (established well) with 95% Bermuda grass, the other 5% is St. Augustine under 2 live oak trees. I have some crabgrass, and probably 6-8 different kinds of broadleaf weeds, none of which are "dominating" any part of the yard. All these weeds and pesty grasses, although not heavy, are growning consistent in with my Bermuda grass. I applied a HI-Yield crabgrass and broadleaf weed control (bought at ACE hardware) in early Feb. Will this do the trick? If not what will? Should my first application of fert. be some type of "weed and feed"? After that, for my regular fert. is the Texas Lawn Fert. sold at Home Depot good for general fert. throughout the summer season? Thanks for any suggestions.