I have a few sections of grass that turn brown in the winter. At first it was on 3' x 3' area but it has gradually grown to an area about 15' x 15'.

I found a thread here that tells how to get rid of Bermuda Grass. My problem is, I don't even know if that is what I have. Further, when the grass is green, it looks just like all of the other grass in my yard (I have Fescue). Since I can't identify it when it's green, how can I put down any of the chemicals that will kill it?

Thanks for any input at all!