En EspaŅol

Q. Who is Mr. Smarty Plants?

A: There are those who suspect Wildflower Center volunteers are the culpable and capable culprits. Yet, others think staff members play some, albeit small, role. You can torture us with your plant questions, but we will never reveal the Green Guru's secret identity.

Help us grow by giving to the Plant Database Fund or by becoming a member

Did you know you can access the Native Plant Information Network with your web-enabled smartphone?

Share

Ask Mr. Smarty Plants

Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.

Search Smarty Plants
    
 
See a list of all Smarty Plants questions
Can't find the answer in our existing FAQs, submit a question to Mr. Smarty Plants.
Need help with plant identification, visit the plant identification page.
 
rate this answer
Not Yet Rated

Saturday - June 01, 2013

From: Theodore, AL
Region: Southeast
Topic: Plant Identification
Title: Identification of tall plant with five-petaled purple flowers
Answered by: Nan Hampton

QUESTION:

I recently moved into a house and have a plant near my fence that has purple flowers with five petals and a somewhat thick stem, about a half inch. The leaves are sparse and it grows about four to six feet so far but I keep cutting it back because it wont attach to the fence, it just sort of grows up until it leans onto my driveway. It remind me of some morning glories I once had but I do not think the stems were that thick..almost like small branches and brown. Do you have any idea what it is?

ANSWER:

One candidate for your tall plant is the Mexican native Ruellia caerulea (Britton's wild petunia).  It has several synonyms:  e.g., Ruellia brittoniana (Mexican petunia), Ruellia simplex, Ruellia tweediana (Mexican petunia).  It is considered invasive in Texas and southeastern states.  It grows to about 3 feet tall.  Floridata says that it has strong semi-woody stems.

I did a COMBINATION SEARCH for other possibilities in our Native Plant Database, choosing "Alabama" from the Select State or Province option and "Blue", "Purple", and "Violet". from Bloom Color.  The only species I could find that were at all similar to your description were these three species of Ruellia.  None of them grow as tall as the Mexican petunia described above.  You should try the same search yourself in case I overlooked a plant that could be yours.

Ruellia caroliniensis (Carolina wild petunia)

Ruellia humilis (Fringeleaf wild petunia)

Ruellia strepens (Limestone ruellia)

There are two other databases that feature plants of Alabama and/or Southeastern wildflowers.   In both of these you can search by flower color.

Southeastern Flora

Alabama Plants

If your plant is not one of the plants listed above or you didn't find it in the plant databases listed above, you can photograph it and visit our Plant Identification page to find links to several plant identification forums that will accept photos of plants to identify.

 

More Plant Identification Questions

Identification of tree with orange flowers in Mississippi
June 01, 2013 - Saw beautiful Orange colored flowers on a tree in Jackson MI. Can't find one that is hardy in our zone. It looked to be about the size and shape of an apple tree. What could it be?
view the full question and answer

Purple bellshaped flowers in Washington state
July 16, 2008 - on Larch mountain, in the state of Washington, I saw purple, bell shaped flowers growing on a stalk. what are they?
view the full question and answer

Plant identification from Tamaqua PA
August 08, 2010 - I live in PA, have a plant growing in my geranium planter, was told it was a moonflower, but it is not a vine. The flower is a white trumpet, six star, with purple in the middle. leaves look like ...
view the full question and answer

Identification of vine with green flowers
May 23, 2012 - Trying to identify a vine with 5-petaled ~1 cm dia green flowers (w/ barely perceptible white & black speckles). I have 3 photos I can send (showing flowers & leaves). The flower petals are almost...
view the full question and answer

Identity of white flowers, 6 petals and 5 yellow stamens
June 16, 2012 - Have white flower with 6 petals and 5 yellow stamen in middle . Looks like yellow stamen star cluster. Could be Gladious or Star of bethleham but Star has 6 yellow stamen in middle right? Can you id...
view the full question and answer

Smarty Plants's Facebook profile Support the Wildflower Center by Donating Online or Becoming a Member today.

Mr. Smarty Plants wants you to be his Facebook friend. Click the Facebook icon to add yourself to Mr. Smarty Plants list of friends.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP
© 2014 Lady Bird Johnson Wildflower Center