The goal wasn't to make something photo-realistic, but something along that lines that also has a bit of a style. I was rather impressed with the results and thankful for the free tutorials online that taught me how powerful and easy procedural modeling can be.
Here's the grass the cowlicks was a design choice it added a lot more character than expected and depth. I quite like it and find it does a lot more than look like the one tiled texture that it is.
Here's the dirt, it's and multiplied overlay on top of a base color, the 3d procedural modeling allowed for the normal map bakes to really let the shape give it's illusion. The green is the under-map color that the title map is blending with.
Here's another shot showing the grass.
Maps where extracted from this geo, made in 3dsMax.
The procedural dirt and rocks without the grass.
The mud's geo