I have a lawn that I soded back in April and it came in great. These people have a sprinkler system and always water a sufficient amount which allowed the lawn to come in nice and thick (like a carpet). The past couple of times I cut the lawn, it looks more and more brownish after I cut it, but it will grow back in greener. So the lawn actually looks its greenest just before I cut it. Why is this happening now? I didn't drop the blades any lower then before, they water the lawn enough. I have a couple of other lawns that does this as well but then I have lawns that are just as green after I cut it then before.