This is a true story, tell me if you've ever heard of anything like it before. We've been in our current home about 4 years now. About a month ago I was out in the front most part of my yard mowing down all the weeds. That's about all that grew out there. You could see little patches of grass here and there trying to make it, but not succeeding very well. Well, after I got done, I saturated the ground with Roundup concentrate all vegetation killer because I got tired of going out every year chopping down weeds. About a week after that, we got steady rain for about a week. It's more rain in a one week period that I've seen since we moved here. About a day or two after it was done raining, I went out to the front porch for my morning smoke, and lo and behold, the areas that I mowed down and applied Roundup too was thick with Bermuda grass! The only thing I can think of, was that the previous owner planted the seeds long ago, and they've been sitting dormant all this time. What else could it be, right?