you know what, I think I may stick with my stiltgrass id looks like the leaves are elongating and light green. I have seen it in lawns we take care of and it seems to do just fine with regular 3-31/2 inch mowing....
See link below for some info
"What do you mean we canít get rid of those weeds in time? Then go over there and put some fancy signs with Latin names in front of them."