I have a lawn that was seeded in early May, and I have a lot of crabgrass spreading through out the front and back lawn. I took the time and effort to water pretty well the first few weeks (to help the seed germinate and all), but have stopped in the past two weeks. I've noticed there is much less crabgrass on the sides of the property, where there is more shade. The desired grass grows much thicker where it is shaded from the sun. Last weekend I spent two hours pulling the largest clumps of crabgrass out of the lawn. Overall the yard has filled in pretty well, I just would like some advice on how to get it to grow thick and lush (it seems to be thin where it gets full sun). I have only mowed twice, and the second time was because the weeds seemed to be growing faster than the lawn. I cut at a height of 3 inches. Any advice on fertilizing, weed and feeds, mowing height, etc.? I am in central PA if that helps.