Here is a small prop set that gives you realistic ground covered in grass and rocks. This ground prop set can be used in many different renders and or themes. I've also included grass, rocks, and a tree sapling to help fill out your scene.
1 ground prop
5 grass props
3 rock props
1 tree sapling
Texture maps range from 1024x1024 pixels up to 8000x8000 pixels. Because of the detail in the ground from both the sculpting and maps you will need to raise the ground on the Y axis just a tinsy bit so that it doesn't look like there are holes in the ground.