Night Sky Petunia’s inky purple flowers are spotted with white, almost like blue jeans splattered with bleach. Each flower is uniquely patterned, no two being the same. The overall effect resembles a starry night, bright with celestial objects. Night Sky Petunia grows 10-16″ tall and spreads 24-36″ wide. Its out-of-this-world flowers create fascinating containers and hanging baskets, or a weed smothering ground cover.