Photo by Melody

PlantFiles: Wild Petunia, Violet Ruellia, Longneck Ruellia
Ruellia nudiflora

Family: Acanthaceae (ah-kanth-AY-see-ee) (Info)
Genus: Ruellia (roo-EL-ee-uh) (Info)
Species: nudiflora (noo-dee-FLOR-uh) (Info)

Synonym:Ruellia nudiflora var. nudiflora
Synonym:Dipteracanthus nudiflorus
Synonym:Ruellia nudiflora var. glabrata
Synonym:Ruellia nudiflora var. hispidula
Synonym:Ruellia tuberosa

5 members have or want this plant for trade.


18-24 in. (45-60 cm)

6-9 in. (15-22 cm)
9-12 in. (22-30 cm)

USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:
Sun to Partial Shade


Bloom Color:

Bloom Time:
Mid Spring
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall

Unknown - Tell us

Other details:
Unknown - Tell us

Soil pH requirements:
Unknown - Tell us

Patent Information:
Unknown - Tell us

Propagation Methods:
From seed; direct sow outdoors in fall

Seed Collecting:
Unknown - Tell us

Click thumbnail
to view:

By Jeff_Beck
Thumbnail #1 of Ruellia nudiflora by Jeff_Beck

By Jeff_Beck
Thumbnail #2 of Ruellia nudiflora by Jeff_Beck

By frostweed
Thumbnail #3 of Ruellia nudiflora by frostweed

By frostweed
Thumbnail #4 of Ruellia nudiflora by frostweed

By LazLo
Thumbnail #5 of Ruellia nudiflora by LazLo

By LazLo
Thumbnail #6 of Ruellia nudiflora by LazLo

By TheOldME
Thumbnail #7 of Ruellia nudiflora by TheOldME

There are a total of 13 photos.
Click here to view them all!


5 positives
1 neutral
1 negative

Gardeners' Notes:

Positive TexasDollie On Jul 12, 2014, TexasDollie from Windcrest, TX (Zone 8b) wrote:

Not sure if I've got the right plant or not...mine's not invasive. It is a native--I dug up the first one in a rent-house lawn. It's been with me through three moves, and seems to thrive without being the slightest bit invasive. Doesn't look like the other ruellias I've seen, though.

Negative nanwicker On May 29, 2013, nanwicker from North Myrtle Beach, SC wrote:

extremely invasive. I planted one then spent years weeding them out of everywhere and still would be but I moved. Perhaps roundup might have killed it but I didn't want to use it. It should really be on an invasive species list in SC.

Neutral TheOldME On Aug 13, 2011, TheOldME from San Antonio, TX wrote:

This plant is found mostly in the cracks and crevices around the patio and walkways. It's a nice plant - just appears in inconvenient places. I was spraying some Roundup on some grass and sprayed some on a few of the wild petunias. In a few seconds I started hearing some very noticeable snapping or popping sounds. At first I thought it was some sort of snapping bug or grasshoppers that the spray had irritated. Something was even hitting me and it was ricocheting off of things nearby. When I looked closely I found that the seed pods on this plant were popping open and ejecting a seed. They were traveling several feet. I assume that the moisture in the spray must have made the plant react as if to rain and thus spread its seeds. I have not seen this interesting feature reported in my readings about wild petunias. Has anyone else observed this?

Positive mermaidKT On Jun 22, 2010, mermaidKT from Austin, TX wrote:

our backyard is covered in this flower. thought it was a weed at first and tried to pull a bunch, but then one bloomed :) I have since been trying to spread them around in the places I want them to be. I'm so happy they volunteered in our yard.

Positive jameso On Jul 11, 2009, jameso from Longview, TX wrote:

This plant is a host plant for the buckeye buttrfly.

Positive walthwilson On Jun 7, 2008, walthwilson from Ennis, TX wrote:

I have my Ruellia in a planter on my patio. It is at least 3 ft. tall. It blooms each morning before sun-up and then the
blooms fall off around mid-afternoon, then the process is
repeated the next morning. Is this normal? I love the plant.
I look forward each morning to see how many blooms I have.

Positive frostweed On May 22, 2006, frostweed from Josephine, Arlington, TX (Zone 8a) wrote:

Ruellia nudiflora, Wild petunia is a lovely perennialTexas native wildflower that is almost evergreen, and will bloom in sun or light shade. Mine volunteered in my yard and is doing very well.


This plant has been said to grow in the following regions:

Zephyrhills, Florida
Tulsa, Oklahoma
Arlington, Texas
Austin, Texas (3 reports)
Center, Texas
Dallas, Texas
Desoto, Texas
Ennis, Texas
Euless, Texas
Fabens, Texas
Houston, Texas
Livingston, Texas
Longview, Texas
Magnolia, Texas
New Caney, Texas
Richmond, Texas
San Antonio, Texas
Victoria, Texas

We recommend Firefox
Overwhelmed? There's a lot to see here. Try starting at our homepage.

[ Home | About | Advertise | Media Kit | Mission | Featured Companies | Submit an Article | Terms of Use | Tour | Rules | Privacy Policy | Contact Us ]

Back to the top

Copyright © 2000-2015 Dave's Garden, an Internet Brands company. All Rights Reserved.

Hope for America