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

Grafting to a cherry laurel for edible fruit in Austin
July 01, 2010 - I was the one who asked earlier about grafting to a Cherry Laurel. I will happily graft a local plum on it, say a Mexican Plum or American Plum or one of the naturalized peaches (a friend has an India...
view the full question and answer

Live oak trees buzzing in Taylor TX
October 20, 2012 - Is it possible for live oak trees to make a buzzing sound? We have heard this sound under our live oak and were worried it was bees but we don't seem to see any. I also heard the buzzing under my mot...
view the full question and answer

Tree options for patio in Sun City West, Arizona.
January 07, 2011 - We have an area near our cement patio in Sun City West AZ where we would like to plant a shade tree. We planted a sissoo tree, but were told that the roots will damage the patio because of the proximi...
view the full question and answer

Symmetrical Holes in Live Oak leaves.
April 08, 2009 - We have 2 young live oaks - quercus virginianum trees and their brand new leaves show two symmetrical rows of pin-sized holes punctured along the length of them. What could have caused this?
view the full question and answer

Plants for under live oak in Houston
July 09, 2011 - Hi, We have a live oak in our back garden in Houston and would like to plant a combination of some native shrubs and flowers near it (preferably perennial). The garden bed is about 4 metres from the...
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