I live in a subdivision (Bethany, near Oak Hills area) whose topsoil was 'scraped' when homes were built many years ago. So, the soil wasn't in great shape to begin with, and now, I'm assuming, it's primarily good ol' Tualatin Valley clay. I try to maintain a schedule of fertilizing, etc., and during this time of year (winter/spring) the lawn looks plush and healthy. But, come summer hear in July/August, areas of lawn simply die...regardless of cutting grass at high level, hand-watering, etc (photos, attached.) Any suggestions for how I can minimize these dead-grass zones? More aerating, perhaps late spring and again in summer? Lime? Low nitrogen fertilizer? Less/more watering? I'm sure this must be a pretty common issue. In our neighborhood, some people have 'solved' the problem by just ripping out old lawn and putting in new topsoil and sod. I've investigated that, and it's not an expense I'm willing to pay. So...I'm hoping the good folks at OSU Extension can provide some wisdom and recommendations on how to help solve this issue. THANK YOU.