Mountain Pink (Creeping Phlox, Moss Pink) is a low-growing, evergreen groundcover or rock-garden plant for sunny areas.  The one pictured is the variety "Emerald Pink."  I originally planted an unnamed phlox I had purchased at a nursery.  That phlox wasn't evergreen, had fewer and less attractive flowers, and was kind of mangy looking.  I would strongly suggest planting any of the Emerald series of phlox, or any other well-known variety.  I prune my plants with hedge shears after flowering to keep them looking neat.