Rent Shop Volunteer Join

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
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

Hybrid Leyland Cypress leaning in Annapolis MC
June 29, 2011 - We have a large, 9-year old Leyland Cypress that has tipped over. It is still green and growing but leaning slightly off center. It's about 20' tall. Should we stake it? If so, we'd like to do ...
view the full question and answer

Viability of Juniperus ashei for making furniture
June 18, 2007 - My husband uses juniper from Oregon to make beautiful furniture. Underneath the ugly bark is a wonderful wood. Is this the same Juniper as we saw all around Austin, Texas.
view the full question and answer

Poolside plants for East Texas
June 18, 2015 - What are the best plants, shrubs, ornamental trees, etc. for poolside planting in East Texas?
view the full question and answer

Fruit on Mexican olive in Austin
June 05, 2008 - Does Mexican Olive set fruit in Austin? Does there need to be a male and female tree or not. How old does the plant have to be to set fruit? Mine is three years old but no olives. I need to know ...
view the full question and answer

Trees & Shrubs for a NY Slope
July 03, 2012 - Our community has a large steep slope (100'high by at least 600' wide) that is sunny & dry. The builders planted "wild flower seeds" on the slope that is now just weeds. We would like to know what...
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.