Have a grass like weed,grows in a clump but doesn't stay green turns white as if its dead. But it is not dead I have pulled this stuff for 2yrs and looks like I have never touched it.The weed varies in width and gets about 4in or taller.Don't know how tall it would get because I have to cut everything else.NEED TO GET RID OF THIS WEED BADLY ANY IDEAS on what it is.The root system is ball like and pulls easy