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 - April 30, 2012

From: Bandera, TX
Region: Southwest
Topic: Pests, Shrubs
Title: Mountain laurels with insect problems in Bandera, TX..
Answered by: Jimmy Mills

QUESTION:

I have 3 mountain laurels about 8 yrs old. Suddenly about 3 yrs ago worms started decimating them. This yr I got dipel dust which works great but only for two weeks. I now have small red flies and tents on the plants. I don't want to dig them out and burn them; what next. I could see them arrive [worms ] from the next property by strings. No one lives next door and it has been derelect for yrs. Help!~!!

ANSWER:

Mountain Laurel Sophora secundiflora (Texas mountain laurel) is a beautiful hill country native , and should be right at home in Bandera County. It is frequently touted as not having serious disease and pest problems. Well you probably feel that isn’t true.

The worms that you mention are probably the larval form of the Genista moth, and are sometimes called Sophora worms. This web site describes their life cycle and gives tips for getting rid of them. This guide from the Desert Botanical Garden ( Phoenix, AZ ) also has helpful information.

For the other conditions that you describe, it would be more helpful to have someone who can actually look at your trees and make an assessment. You should be able to find such a person at the Bandera County Office of Texas AgriLife Extension.

 

 

From the Image Gallery


Texas mountain laurel
Sophora secundiflora

More Shrubs Questions

Dying foliage on non-native Otto Luyken Laurel from Georgetown KY
April 09, 2014 - I have 5 luken laurel scrubs planted around foundation. They have done very well until this last winter..the foilage is now brown and crispy. Will they come back? Do I need to prune back the damage...
view the full question and answer

Replacement of non-native red tip photinias in Midlothian VA
April 30, 2012 - I need to replace our long lived red tips. They are now diseased. I would like a fast growing bush that I can trim and make a hedge with. Any suggestions
view the full question and answer

Plants for a sandy slope at a weekend cabin in central WI.
June 30, 2009 - I have a cabin in central Wisconsin where the soil is equivalent to a sandy beach. There are some areas that are nearly impossible to mow because of how steep the incline is. Could you recommend som...
view the full question and answer

How can I distinguish between Wax Myrtle and Dwarf Wax Myrtle?
November 04, 2009 - I need help identifying between a southern wax myrtle and a dwarf wax myrtle. I am after the bigger type and think my landscaper accidentally put in dwarves. How can I tell? I had 8 put in and their l...
view the full question and answer

Leucophyllum Resistant to Verticillium Wilt
March 25, 2015 - I need to know which large shrubs are resistant to verticillium wilt? I believe that a few of our Elaeagnus have succumbed to this disease, but being over 15 years old, I am not positive. I am thinki...
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP | STAFF
© 2016 Lady Bird Johnson Wildflower Center