Ruellia humilis is a North American perennial wildflower in the Acanthaceae family, grown for its purple petunia-like blooms. It thrives in dry, well-drained, sunny spots and tolerates poor, rocky soil.
Family
Acanthaceae (Acanthus family)
Grows as
Perennial
Light
Full sun, Part shade
Water
Water sparingly once established; allow soil to dry out between waterings.
Soil
Dry to average, well-drained, rocky or sandy soil; tolerates alkaline soil.
Temperature
Hardy in cold winters; roughly -30 to 35 °C range for established plants.
How easy
Easy
Native range
C. & E. U.S.A.
Climate
temperate
About
Ruellia humilis (wild petunia, fringeleaf wild petunia, hairy petunia, low wild petunia) is a species of flowering plant in the family Acanthaceae. 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:
Where it grows
Ruellia humilis grows in dry to average soil in full sun to part shade conditions. Its habitats include prairies, glades, meadows, and open woodland environments. It grows well in dry, shallow, and rocky soils. It has been observed to have a high level of richness of arbuscular mycorrhizal fungi(AMF) diversity when located in calcareous plots as compared to acidic plots.
Text excerpted from the Wikipedia article Ruellia humilis by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.