I saw a few strands of moss phlox flowering. The leaves of Phlox subulata are shaped like little awls, which you might guess if you’re a Latinist. The plant is a perennial and forms mats that might remind you of moss. The flowers are usually purple or pink, but the ones I saw were mainly white. It was as if a watercolorist had touched the wet petals with a brush and the purple had run.
Is this lovely plant a native or an invasive species?
I’d say it’s an example of what’s wrong with that concept. The experts say the native range covered much of Eastern North America, extending south to North Carolina. But the plant did well in the Appalachians, which spill into northern Georgia. The line between the Piedmont and the mountains is tricky, so maybe part of the Piedmont.
The experts say Stone Mountain is beyond the native range, but close. Moss phlox does well in our rocky soils, so the garden centers sell seedlings.
What of the plant I saw? How did it get there? As a practical matter, I have no way of knowing whether it found its place with the help of wind, bird, squirrel or gardener.
Native or invasive? I don’t know. I don’t see how experts could know.