why does my grass die in the summer

Question

my grass does good in spring arter using Scott Turf Builder. When hot weather comes, the grass dies in spots leaving dits with some black spots that looks almost like mold. it spreads across the back yard.  we have replanted the grass several times but it still dies in hot weather. it comes back in the spring, then it will do the same all over again in the summer.

Answer 1

Have you ever tried to lime your soil.  That sweetens the soil.  Are you watering the lawn too much to cause a fungus or mold?  What kind of soil is under the grass?