Ok, so i tried some Scott's Weed and Feed. I have Centipede grass. I applied the Scott's using a Scott's standard spreader, and applied it per the specifications on the bag. This was nearly a month ago. As of 3 days ago, my grass has started to brown in large areas. The browning starts at the tip of the blade and works its way back 1.5 to 2 inches. Does it sound like the Weed and Feed is causing it, or could it be something entirely different? Also, is there a good fertilizer that I can apply to help strengthen/thicken the grass and get it growing a little faster. Up until a few days ago, I had the best looking grass in the neighborhood, now its starting to lag behind with its recent browning. Any advice you guys can give would be great. I don't have an applicator's license, so I'm limited to what i can pick up at my local feed store or Lowe's/HD. Thanks.