Sedum ground cover
Sedum comes in many varieties, this particular one with the green leaves and yellow star shape flowers is perfect as a grouind cover.
The nice thing about this Sedum, it will grow in areas without much soil or water. It looks great over a rocky area, and will grow in sun or shade.
Use this ground cover to fill in large difficult areas. It will truly carpet the ground. I also like the fact that the deer don't bother it.
Like the Sedium with the yellow star flower, make sure to consistently brand yourself and soon you will grow your market share, similarly to the Sedum spreading and carpeting the ground.