En Español

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

Please forgive us, but Mr. Smarty Plants has been overwhelmed by a flood of mail and must take a break for awhile to catch up. We hope to be accepting new questions again soon. Thank you!

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

Need suggestions for plants for a bird/small wildlife refuge in Wichita Co, TX.
August 26, 2011 - With our continuing drought in North Texas, I'm planning to transform my small backyard into a bird/small wildlife "refuge". What types of native plants and grasses can I plant in dry, hot Wichita ...
view the full question and answer

Philadelphus ernestii under live oak in Pflugerville TX
April 05, 2010 - Will Philadelphus ernestii thrive in the root zone of live oak, or would the oak inhibit its growth? I'd like to plant it just at the edge of the canopy.
view the full question and answer

My Mock Orange fails to flower in Redmond, WA.
July 06, 2011 - I planted a Mock Orange shrub about 5 years ago. The first few years, it only produced leaves but no blossoms. Then, last year, it finally produced 4-5 blossoms on 2 of the branches. This year, it a...
view the full question and answer

Japanese maple in New York
August 15, 2008 - I have a few questions: Do you know what zone Brooklyn, NY. is in? If I plant a Japanese Maple in my backyard, do you think it can tolerate almost full shade (1-2 hours of sun per day)? Also, is it...
view the full question and answer

Non blooming Texas Mountain Laurel from Las Vegas NV
September 04, 2012 - Hi, I live in Las Vegas, Nevada and have a Texas Laurel and have had it for 2 years and still no purple flowers on it. Why won't it bloom ? Thank you.
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 | JOBS | SITEMAP | STAFF INTRANET
© 2016 Lady Bird Johnson Wildflower Center