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

Thursday - December 16, 2010

From: Austin, TX
Region: Southwest
Topic: Pests, Trees
Title: Larvae infesting Mexican white oak
Answered by: Nan Hampton and Eric Beckers

QUESTION:

What larvae/worm would dwell and eat the inside of a Mexican White Oak? I planted one last November and it was doing great. The bark started cracking towards the bottom but the top was very full & green with plenty of new growth. One day I found it had snapped in two at the bottom of the trunk and there were many white larvae worms inside!! I always thought of them as pretty pest resistant. Thoughts? What could it be and how do I treat it? Also, I planted another one in the front yard on the same date. How do I know if it's infested?

ANSWER:

Mr. Smarty Plants consulted Eric Beckers with the Texas Forest Service about the problem with your Quercus polymorpha (Mexican white oak).  We don't know for sure what insects the "many white larvae worms" were; but we do believe that whatever they were (borers, ants, etc.) that they were acting on a previously damaged tree. Newly planted nursery stock are often afflicted with mechanical injuries or sun scald and these minor problems can turn bad when a borer or other insect sets up shop.  Rough handling, bruises, tight wraps/ties, etc., are locations where borers seek entry.  Newly planted trees are all too often damaged by weed whips and mowers and insects take over the nice cavities left behind.  Anyway, the problem is probably restricted to the one tree, unless the other was similarly damaged.  You should carefully inspect the other tree and if you do see damage, you might want to contact a professional arborist.

 

More Pests Questions

Red spider mites in native bluebonnets in Austin
April 02, 2008 - What would you do if the WFC bluebonnets developed a bad case of red spider mites? That is what has happened to many of mine here in Austin. I noticed them the other day and I must have been asleep be...
view the full question and answer

red maple bark damage by squirrels
April 15, 2011 - We have two acres of land, largely covered by various oaks and cherry laurels -and, after many hours of cutting down chinese tallow trees..finally some red maples. Our problem is that we also have a s...
view the full question and answer

Non-blooming toad lily in Kentucky
April 20, 2008 - I have had a toad lily for three years and it has never bloomed. What do I need to do?
view the full question and answer

Plants ants avoid from McAllen TX
May 22, 2010 - Which native plants do ANTS avoid (are there?)? We have a big ant problem here. Thanks!
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

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