It was light green and as soon as I applied the Meso 4SC the weed started turning white. I have never seen this kind of weed in my life. Do you think the herbicide is working? I will post the photos tomorrow. In April I got rid of a 20 yr old Silver maple tree which had severely exposed tree roots. I had hired a mexican to install a new maple tree. He took out a lot of old soil and brought in a 4 cft of top soil (must have got it from a dumpster) which had all these weeds. I overseeded with tall fescue in late April which was too late and the summer was too hot and most of the grass seeds did not germinate. However, the new tree did not survive it died within 2 months. Now, I have to go a new tree in Sept.