I'm new to this site, great wealth of information and any suggestions and/or replies are greatly appreciated! I live in the western suburbs of Chicago and the lawn is looking patchy this year. Never had this problem before. What can I do to get it up to par again? It's my understanding that I should aerate and overseed in the fall, correct? Any suggestions on seed type. Should I fertilize afterwards? What steps should I take? I'll do whatever it takes to get it looking as it should. Thanks.