I've added a photo of the weed in question. I've used Weed-b-gone on it in previous years and spectracide and it doesn't seem to work. I don't know if it is quackgrass or crabgrass or what. It is in a very sunny area of my yard and greened up faster than any other grass or weeds in my yard. It also grows taller than my other grass between mowings. Please help me figure out what it is and how to kill it because its making my back yard hideous.