Ruellia carolinensis, commonly known as Carolina Wild Petunia or Carolina Ruellia, is a perennial herb native to the Southeastern United States. It is typically found in a variety of habitats including moist to dry woodlands, forest margins, stream banks, and fields, as well as in open disturbed areas. This species grows at a moderate rate to a height of 1-2.5 feet (0.3-0.8 meters) and a width of 1-1.5 feet (0.3-0.5 meters). It features lance-shaped leaves and produces purple or lavender flowers that are quite showy and bloom in the summer months. The flowers attract pollinators such as butterflies and bees, adding to the ecological value of the plant.

Carolina Wild Petunia is appreciated for its ease of maintenance and the splash of color it provides when in bloom. It is commonly used in native plant gardens, borders, and as a ground cover. This plant is adaptable to a range of soil types, including clay, loam, and sandy soils, as long as they have medium drainage. It thrives in full sun to part shade and requires medium amounts of water, making it a versatile choice for gardeners. While generally pest-free, it can be susceptible to root rot in overly wet conditions. Carolina Wild Petunia can self-seed prolifically, which is a consideration for gardeners who wish to prevent it from spreading too freely.CC BY-SA 4.0