Thanks for the comments Oshyan, I will see what I can do about vegetation in the distance, My fist efforts were to populate those areas but the count to make it look real were huge I am going to try a combo of power fractal and population.
The "blurry" and black borders in the potholes are some water that didn't take very well, it is something I am working on also.
The grass that appears to be floating really isn't when I render it there are little flat places where you see grass.
I will post a new image with some of the above comments later.
Thanks guys.