The Mexican pansy (Ruellia brittoniana) is more commonly called the Mexican petunia because of its striking resemblance to the annual flowering plant. Mexican pansy is a perennial flowering shrub that grows to 3 feet tall and thrives in heat and sunshine. Blooming with blue-purple flowers, from late spring through early fall, there are also white, pink and dwarf cultivars. Mexican pansy attracts butterflies, is disease- and pest-resistant and grows well in containers. If you are looking for a low-maintenance plant, and you live in USDA hardiness zones 8 through 10, consider the Mexican pansy.
Water to keep the soil slightly moist (the moisture in the soil should be similar to a well-wrung sponge) during the growing season. Allow the soil to dry out between waterings in the winter.
Fertilize the Mexican pansy once a month during the growing season with a 10-10-10 fertilizer, at the rate suggested on the label for the size of your plant.
Cut the stems back halfway after flowering and the Mexican pansy will rebloom.