There’s not a whole lot to do as your cool season grass goes semi-dormant when the temperatures go above 86°. You don’t want to fertilize at this time as the dormant grass will not absorb and use it. Weed and/or crabgrass control is “iffy” and can actually do more harm to your lawn than good. This is the time of year when diseases start to occur. Most are weather and cultural related and there is no remedy once they occur. If you know of this to happen or would like to err on the side of caution, you can apply Bonide’s Infuse to keep the disease breeding from occurring. Consider the way you take care of your lawn and the type of grass you plant. Sod can be used as a “quick fix” as long as it is kept watered.