After the recent " What is this post " to me it looked like Yellow Nutsedge. It got me to remembering the old days when I ran Basagran, it worked for. Then I switched over to other products and never went back to Basagran. Sedge Hammer tends to be slow acting...but it works. I remember Basagran being faster and I could keep a bottle of mix on hand. So what do you run ?