Ruellia, Desert Petunia, Florida Bluebells, Mexican Petunia, Mexican Blue Bells 'Purple Showers'

Ruelliasimplex

Family
Acanthaceae (ah-kanth-AY-see-ee)
Genus
Ruellia (roo-EL-ee-uh)
Species
simplex (SIM-plecks)
Synonym
Sun Exposure
Full Sun
Foliage
Herbaceous
Height
24-36 in. (60-90 cm)
Spacing
18-24 in. (45-60 cm)
Hardiness
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)
USDA Zone 11: above 4.5 °C (40 °F)
Danger
N/A
Bloom Color
Medium Purple
Bloom Time
Blooms repeatedly
Other Details
Category
Tropicals and Tender Perennials
Water Requirements
Drought-tolerant; suitable for xeriscaping
Foliage Color
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Other details
May be a noxious weed or invasive
Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information
Non-patented
Propagation Methods
By dividing the rootball
From herbaceous stem cuttings
Self-sows freely; deadhead if you do not want volunteer seedlings next season
Seed Collecting
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
Regional

This plant is said to grow outdoors in the following regions:

Grand Bay, Alabama

Huntsville, Alabama

Muscle Shoals, Alabama

Robertsdale, Alabama

Green Valley, Arizona

Mesa, Arizona

Queen Creek, Arizona

Boca Raton, Florida

Brooksville, Florida

Fort Lauderdale, Florida

Fort Myers, Florida

Hollywood, Florida

Kissimmee, Florida

Lake Mary, Florida

Melbourne Beach, Florida

North Port, Florida(2 reports)

Palm Bay, Florida

Pensacola, Florida

Port Richey, Florida

Rockledge, Florida

Sarasota, Florida

Tampa, Florida

Vero Beach, Florida

Winter Garden, Florida

Guyton, Georgia

Savannah, Georgia

Tucker, Georgia

Baton Rouge, Louisiana

Gonzales, Louisiana

Lafayette, Louisiana

Metairie, Louisiana

Cape Girardeau, Missouri

Albuquerque, New Mexico

Hillsborough, North Carolina

Morehead City, North Carolina

Gibsonburg, Ohio

Tulsa, Oklahoma

Caguas, Puerto Rico

Georgetown, South Carolina

Summerville, South Carolina(2 reports)

Clarksville, Tennessee

Abilene, Texas

Fate, Texas

Freeport, Texas

Houston, Texas(2 reports)

Humble, Texas

Irving, Texas

Keller, Texas(2 reports)

Marble Falls, Texas

Mont Belvieu, Texas

Orange, Texas

San Antonio, Texas

show all

Featured Videos

Gardener's Notes:

7
positives
3
neutrals
4
negatives
Sort By:
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C
Cape Girardeau, MO | October 2018 | positive

I have grown this plant for several years in southern Missouri. I have read that it does not self seed. I grow this plant in large plant...Read More

S
Hillsborough, NC (Zone 7b) | September 2018 | positive

I picked this up at Southern Horticulture in Saint Augustine. It's growing very well here in central NC, blooming but not spreading. It's...Read More

C
ROSLINDALE, MA | March 2016 | negative

'Purple Showers' is a sterile cultivar of this invasive species. It still spreads underground aggressively by rhizomes, but unlike the sp...Read More

P
Altamonte Springs, FL | July 2012 | positive

Mexican Petunias are flowering well but have velvet whiteish growth all along the leaves discoloring the entire section of plants. Is thi...Read More

D
Fairfax Station, VA | September 2010 | neutral

I brought this plant with me from SC when I moved to VA. It is growing much taller than it did in SC and hasn't bloomed yet! It's in full...Read More

D
Lake Mary, FL (Zone 9b) | September 2010 | positive

This plant may be on Florida's invasive list, but many
gardeners in Central Fl. are enjoying the purple blooms.
I began w...Read More

M
M
| July 2009 | negative

This is a pretty plant, that grows well and is perfect for poor soils or dry areas.

BUT, this plant is INVASIVE, highly a...Read More

S
Boca Raton, FL | July 2009 | negative

This is an aggressive plant that is very, very difficult to get rid of once it is established. I planted some in the front bed and it to...Read More

S
Gibsonburg, OH | April 2008 | positive

My mom brought me a glass full of cuttings last year, from Florida (I'm in Ohio). She had bought them at a national home improvement sto...Read More

E
Edinburg, IL (Zone 6a) | September 2007 | positive

I bought this from a garden center in Illinois, the first I'd ever seen it sold here as an annual. It did VERY well in my poor clay soil...Read More

J
Palm Bay, FL (Zone 9b) | July 2006 | neutral

it can become very invasive...and stores sell it all the time..i have noticed the mini ruella.....it took me a long time to dig it out as...Read More

V
V
Melbourne Beach, FL (Zone 10a) | June 2006 | negative

This plant is on the Florida Department of Environmental Protection's invasive plant list. It spreads like crazy!

M
Jacksonville, FL | February 2005 | neutral

From the near-by church, to a basket my neighbor had discarded, to the fern pot the old basket held for me. Very, very "naturalising". My...Read More

S
North Port, FL | June 2004 | positive

this plant is wonderful. in my garden it is growing very well, each morning the beautiful flowers open up and add a great contrast to my ...Read More

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