I love this forum as a resource since I have purchased my home and I'm trying hard to get my lawn back in shape after years of neglect by the previous homeowner. I'm starting to win the battle with the weeds and I think I have my sprinkler timing working well, but I have this odd growth of grass popping up all over that's really ugly. It's darker green than the rest of my lawn and grows insanely fast. Here is a photo showing the dark green clumps. The discrepancy in growth is from just 2 days as I mowed the lawn Saturday!
Does anyone know what this is and how I can stop it from happening? Additionally, I don't believe any dogs ever use my lawn as a bathroom.