Guys I need some help with planting season on its way. Last year I completely roto-tilled the yard and replanted and it looked GREAT for three quarters of the summer. Then it started getting patchy. Half the problem is the backyard has a lot of shade and not great topsoil. The front yard I dont know whats going on. We had grub problems the year before I roto-tilled it and didnt notice them that much last year. I fertilize, weed and feed, mow weekly, etc the grass that is there looks great but its patchy. I need advice because Im not that great with grass any ideas that wont require me to roto-till the yard up and lay more topsoil in?...I dont want another dirt yard this spring with the dog tracking it in the house thanks in advance Im looking at zoidzia grass plugs or whatever theyre called I dont know whether they work or not.