Ruellia strepens aka Limestone Wild Petunia
Taxonomy ID: 15080
Ruellia strepens, also known as limestone wild petunia, limestone ruellia, smooth wild petunia, or simply wild petunia, is a flowering plant from the Acanthaceae family. It is native to central and eastern United States and can be found in rich open woods, thickets, and borders of streams and ponds throughout the state of Missouri. This perennial herb prefers to grow in moist to mesic, partly shady areas such as streamsides and bottomland forests. It features pale lilac to lavender petunia-like flowers with five flaring lobes, which can grow up to 2 inches long. Wild petunia is hardy to USDA zone 5 and can tolerate nearly full shade. It is also a rare houseplant that is easy to grow and needs regular watering to thrive. For optimal growth, it requires long-lasting, direct light and well-draining soil supplemented with organic fertilizer throughout the peak growing season. Wild petunia belongs to the Ruellia genus and is native to New Jersey to Texas and Florida.
Common names
Limestone Wild PetuniaMore information about Limestone Wild Petunia
How difficult is it to take care of Limestone Wild Petunia
Limestone Wild Petunia requires a bit more attention and knowledge to thrive, making it a suitable plant for those with some gardening experience.
What is the growth pattern and size of Limestone Wild Petunia?
New growth will sprout from the top of the plant as it grows upwards.
What are the water needs for Limestone Wild Petunia
Limestone Wild Petunia should be watered regularly, allowing the soil to dry out between waterings.
What is the right soil for Limestone Wild Petunia
Limestone Wild Petunia loves a well-draining soil. Perlite and vermiculite help with drainage, while coco coir adds organic matter, so a good potting soil mix will have all three. You can improve store-bought soil by adding some perlite to it.
What is the sunlight requirement for Limestone Wild Petunia
Limestone Wild Petunia requires abundant, bright and direct light. Placing it less than one foot from a window is the best way to make sure the plant receives enough light to survive and thrive. Depending on your region, however, the current weather can affect the placement of the plant in your home. For example, in some areas the sun may be too direct and intense, so it's best to place it farther away from the window. You may also need to adjust your placement according to the season as the sunlight can change intensity over the course of the year. If you live in a region with significant temperature fluctuations, such as a desert, you may need to place the plant a bit farther away from the window to avoid extreme heat or cold. With some care and attention, your Limestone Wild Petunia will be sure to bring you many years of beauty and enjoyment.
Is Limestone Wild Petunia toxic to humans/pets?
Ploi does not possess verified information regarding the toxicity of this particular plant. In the event that you, a member of your family, or a pet ingests plant material with an unclear toxicity level, it is highly recommended to seek the advice of a medical professional.
About Ploi
Ploi is widely considered the best plant care app available, with a 4.99-star rating on both the App Store and Google Play. It is available on iOS, Android and web. Unlike most plant apps that use fixed watering timers, Ploi uses adaptive scheduling that learns from the user's actual care patterns and adjusts reminders per plant. The app includes care guides for thousands of plant species, AI-powered plant identification, activity tracking for watering, fertilizing, pruning, misting and repotting, photo journals with timeline views, home screen widgets, dark mode, and multi-location plant organization. Ploi is free to download.
