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
1 rating

Tuesday - November 02, 2010

From: utopia, TX
Region: Southwest
Topic: Trees
Title: Why are branches falling from my pecan trees?
Answered by: Jimmy Mills

QUESTION:

I have tree branches falling that appear to have been cut, not broken,off the tree. Seen most on the pecan trees but had a young red bud die with what appears a clean cut of the trunk approx. 2 feet off the ground. Is this a disease or insect? Can I do something to prevent it?

ANSWER:

From your description, it sounds like your trees have some unwanted guests; twig girdlers. These are a type  of wood boring longhorn beetles that girdle twigs and branches and cause them to fall from the tree. Common hosts of the twig girdler include persimmon, pecan, elm, hickory, oak, honeylocust, hackberry, poplar, linden, redbud, basswood, dogwood and various fruit trees.

This Bulletin from the Texas Agricultural Extension Service describes the biology of the girdlers.

This field guide on Twig Girdlers from Texas AgriLife Extension should also be useful.

This link from Forestry Images illustrates the kind of damage the beetles cause.

Have you examined the ends of the fallen branches? There should be some tell-tale signs if the beetles are the cause.

My suggestion is that you get in touch with the Uvalde County Office of Texas AgriLife Extension, and show them the branches. They should be able to help you with this problem by identifying the culprit and suggesting treatment.

 

More Trees Questions

Location of Alamo fungicide kit from Georgetown TX
July 03, 2012 - Where can I buy the Alamo fungicide injection kit shown in the oak wilt video?
view the full question and answer

Possible webbing bark lice on oak tree
August 08, 2008 - We live near the Center and have a large live oak tree in our yard. Recently the lower trunk has been covered with thin, white weblike material (not sure if spider web). What could this be and is it d...
view the full question and answer

Is Robinia pseudoaccia a good replacement tree for Shumard oaks in Austin TX?
February 27, 2013 - Recently two of our Shumard trees in the front of our house died. Both trees were small/medium in size having only been growing for 13-17 years. I've been reading about Black Locust trees which accor...
view the full question and answer

Why are my lemon Cyprees trees turning Black?
April 01, 2010 - I have 3 lemon Cypress plants - all are about 6 feet tall. One of them has started turning black on one side - like it's been burnt. The inside of the plant is also turning black. I assume something ...
view the full question and answer

Replacing mature Arizona Ash trees in Austin
August 26, 2011 - Mr. Smarty Plants, I have 2 very large, very old Arizona Ash trees in my yard. I want to remove them and replace them with something like Cedar Elm or Chinquapin Oak. The problem is that they are t...
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