- Each flower has a lifespan of about one day.
- After being introduced to Florida almost 100 years ago, it took to the climate marvelously. It grows so well in the warm humidity that it’s become invasive in many areas of the southeastern US.
- It forms horizontal roots underground, making it difficult to completely remove.
- Sussy imposter plant: It’s not actually a petunia!
- The genus Ruellia is named for Jean Ruel, botanist and physician to King Francis I of France.