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

Monday - October 26, 2009

From: Monroe, LA
Region: Southeast
Topic: Invasive Plants, Non-Natives, Pests, Herbs/Forbs
Title: Damage to ruellia in Monroe LA
Answered by: Barbara Medford

QUESTION:

I have hundreds of Ruellia Brittoniana. Dwarf Katie White, Katie Blue and Katie Pink. I am finding holes in some of the leaves, Some just have notches chewed out of them. Some of the leaves have even fallen off due to damage it looks like. What can this be and what should I do? I have searched hundreds of questions on your site under plant damage and I still have not found for sure what I need.I saw your information and photos of spider mites, white flies Etc. I don't see anything like that.I saw what we call a stink bug that we see on cucumbers but I only saw one.

ANSWER:

At the Lady Bird Johnson Wildflower Center, we are dedicated to plants native not only to North America but to the area in which the plant is being grown. There are 8 species of ruellia native to Louisiana, but none of them are those you are asking about, all of which are non-native hybrids, and therefore out of our range of expertise. However, we did do some searching for what might have been causing the holes in your plants, and it would appear the reason there is no information on pests and diseases for ruellia is that the general concensus is that it has no pests and diseases of any concern. One possibility that occurred to us is grasshoppers; we have observed in the past that they can be "hit and run" bugs, having a bite here and there but not hanging around. If they are not affecting your blooms, it would not seem you have much to worry about. You should also note that the ruellia is considered an invasive plant in many areas of North America, especially in the South. Read this article from Floridata on Ruellia brittoniana for more information.

Since we are neither entomologists nor plant pathologists, you might get better information from the Louisiana State University Research and Extension Office for Ouachita Parish.

 

More Pests Questions

Caterpillars eating passion vines from Austin
May 17, 2012 - My question concerns Yellow passion flower, purple passion vine & butterflies. I have had my passion vines for 3-4 years, each spring they start growing beautifully, then in 1-2 days are almost compl...
view the full question and answer

Aphids in pecan tree from Austin
July 14, 2012 - Last year at this time (midsummer) everything under the canopy of our 60+ year old pecan tree was covered with a sticky substance--plants, lawn furniture, concrete pool deck..Since we had never seen t...
view the full question and answer

What causes peach fruit to ooze sap?
July 27, 2009 - I have a peach tree at our new house. The peaches are small and yellow but appeared healthy. Now it looks like they are oozing or weeping sap out of several places on each one. I dont know if its a di...
view the full question and answer

Dog-proof grass from The Woodlands TX
April 26, 2013 - I am looking for a hardy grass that can tolerate female dogs urine. Zoysia was suggested but I am concerned about it being invasive. Any suggestions?
view the full question and answer

Black walnut herbivory
June 13, 2005 - We moved to Texas just about a year ago and have loved it here. This past January we visited the Wildflower Center and obtained some black walnut seeds. Up until last night the tree was doing well p...
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 | STAFF
© 2015 Lady Bird Johnson Wildflower Center