I'm working in Unity and have created some low poly meshes using blender. Currently, the meshes look good, but the ground seems very lacking. I am not sure how to make it feel natural or even look good in general.
The ground needs to remain mostly flat due to the game placing flat objects on the top of the plane and the image shows the exact camera angle we are using. But, as you can see in the image, the ground is extremely lacking and it doesn't look like a ground but instead just a flat background color. I've tried textures but it does not look good with the trees and low poly design.
How can I make the ground look better?

The ground needs to remain mostly flat due to the game placing flat objects on the top of the planeWhy? Can't the game place objects on non-flat terrain? \$\endgroup\$