Well here's the situation. I have a hybrid bermuda lawn in the Memphis, TN area. I just recently had some Palisades Zoysia sod layed down to where it will take over my lawn over the next 3 years or so. This grass is neither of those. In fact you can see that my grass is still largely dormant, but this grass/weed is completely green and has been growing healthily for the last month or so. I make a weed killer concoction made with a bunch of stuff I bought at the local lawn supply store including Image, manage, MSMA, 2,4-D, and some weed-b-gone too since I had some laying around. It didn't even remotely phase this weed/grass... killed every other weed in my lawn but this stuff didn't even turn a lighter shade of green - it just kept on growing like nothing happened. I have one potential theory... I had a very shady area that I planted some sort of seed in last year - unfortunately I don't remember what kind of seed it was, but just that it said on the bad it did very well in extreme shade areas. The grass that I grew in the shade there looks very much like this grass - I just can't imagine how it would have spread so far across my lawn in only one season. Of further interest is my dad, who lives 10 miles south of me said he's had a problem with this exact stuff for several years now. I have a few more pictures from further away if anyone needs a more pics to be able to tell what it is... Help!