Ruellia humilis (wild petunia, fringeleaf wild petunia, hairy petunia, low wild petunia) is a species of flowering plant in the Acanthaceae, the acanthus family. It is native to the eastern United States. It is grown as an ornamental plant. Ruellia humilis is native to the U.S. from the northeastern/northern central to the southeastern/southern central regions. According to the Germplasm Resources Information Network of the United States Department of Agriculture, Ruellia humilis is native to the following states: