I am meticulously grooming my very first lawn through our first summer and all of a sudden this darn varment starts growing like crazy in my lawn. What causes yellow nutsedge to grow? And what is the best way to get rid of it? I read that it grows in areas where there is poor drainage, does that mean that I am watering my lawn to much? Also, I have been told the best way to get rid of it is to take 9/10th of a gram of "manage" and to spray the whole lawn with it. Any ideas on what causes it and what to do to get rid of it? Thanks!