I have 2 or 3 rather large patches of grass in my yard that I have never seen before. At first I thought it was caused by my lab laying on it and then I was convinced they were crop circles...LOL. The guy at home depot said probably crab grass,but another guy looked at it and said not, but didn't know what it was. The spots are about 4 by 4 and the same color as the rest of the grass but looks like a bad cowlick as the grass lays flat in all different directions. Anybody want to hazard to guess what it is? Unfortunately I have clover for the first time this year as well....argh!