Great way to control access to the fire, and prevent too much heat where you don't want it! Just build the back rim of the fire pit surround so it's higher! Backyard fire pit ~ nice for on the edge of a patio.
Looks like creeping phlox, but apparently is Trailing Rosemary? One pinner said: Trailing Rosemary produces beautiful blue foliage. It requires little water, and has a moderate growth rate. It has no allergens, but yet is very fragrant.