No, that's liriope - very common here. Pretty much no maintenance. I haven't even watered them at all this year, and they're looking good. Landscapers plant them because they're pretty much idiot-proof. They're like spiders; they can survive almost anything. You'd really have to go out of your way to kill one.Were those petunias? I really like those flowers and they are easy to keep at home.
However...that blurry purple flower in the background is indeed a petunia. Anyone who plants basket/planter flowers here plants petunias. They're the McDonald's cheeseburger of garden center flowers.
Liriope muscari is a species of low, herbaceous flowering plants from East Asia. Common names in English include big blue lilyturf, lilyturf, border grass, and monkey grass. It is a perennial with grass-like evergreen foliage and lilac-purple flowers which produce single-seeded berries on a spike in the fall. It is invasive to North America and considered a threat to native wildlife.