Lawn Problem-Brown/dead? Spots
Hi, this is my first post so let me know if there is anything else you need to know to help me out. I have a cool season grass that I water everyother day for about 20 min each station. I'm on about 8,000sq ft. The lawn had looked fine up until a few weeks ago. It has been upper 90's for about 3 weeks. I have not aerated this year or de-thatched I applied some fertilizer at the beginning of the spring. Today I dug up 1sq ft to see what was going on underneath, there were no grubs and the soil was still moist. Any advice or opinions would be appreciated. These are the main areas around my yard. Should I be applying a fertilizer now?