Explore Plants

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
    
 

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

Sunday - August 23, 2009

From: Raleigh, NC
Region: Southeast
Topic: Non-Natives
Title: Non-native Ruellia brittonia in Raleigh NC
Answered by: Barbara Medford

QUESTION:

I have discovered Mexican Petunias this year. I LOVE THEM! Beautiful plant. However, they are so tall and after a rain are leaning badly. Should I tie them back? Will they get stronger as they mature? I also have a low growing variety that I love. Can I divide it? I have a large, red clay hill that I have planted on behind my house. It would be beautiful to cover with the low growing variety.

ANSWER:

Ruellia brittonia, Mexican petunia, is native to Mexico, the Caribbean and South America, and therefore out of our range of expertise. At the Lady Bird Johnson Wildflower Center, we are committed to the care, protection and propagation of plants native not only to North America but to the area in which the plant is being grown.  They also are known to have the capacity for becoming invasive. Since they are not in our Native Plant Database, here are two websites with more information: Floridata and Center for Aquatic and Invasive Plants.

 

More Non-Natives Questions

Smarty Plants on fungal attack
October 12, 2005 - I have three plants that have been getting fungus on their soil and I've tried to get rid of it by scraping it off, watering it less and more sunlight. It's two coleus and a begonia. I don't know...
view the full question and answer

Texas frogfruit vs. non-native St. Augustine grass
October 12, 2008 - Can Texas frogfruit resist invasion by St. Augustine grass, or will I need to create a barrier?
view the full question and answer

Problems with non-native petunias from Hodgeville, KY
May 12, 2013 - Planting petunias again in a house border bed.. It has been a tradition for 30+ years to plant the small upright petunias in this particular bed. It started as a Mothers Day gift to my Grandmother, ...
view the full question and answer

Non-native, invasive Rapistrum rugosum
April 02, 2008 - What is the name of the alien, spindly, yellow mustard that we see blooming around Austin now ? Is it Hedge Mustard (Sisymbrium officinale) ?
view the full question and answer

Care of non-native Sorbaria sorbifolia (false spiraea)
August 24, 2010 - I have 2 Sorbaria sorbifolia (false spiraea) that will not flower. This is their third summer. What should I do?
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.