Lawn dead spots
Two years ago i removed quite a bit of pachysandra and tried to grow some lawn. We thinned out the trees quite a bit and i think the areas gets a decent amount of sun.
I aerate (manually) and seed late in the fall and things go well. Early spring i usually throw down a little more seed and general purpose fertilizer and i have a good looking thick and lush lawn in April - it grows like crazy. Come mid-late May things start to deteriorate. After i mow (high) a couple of times i start to see bare spots (see pic / link). Certain patches look like it lies completely flat and is brown. Maybe it's the dead clippings from the mowing? Anyway, i really have no idea what is going on and would love some advice from this forum. Either for a rescue this year (last year it was pretty much the same story) or a more long-term educated approach.
Here is a link that might be useful: