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

Tuesday - October 27, 2009

From: Wimberley, TX
Region: Southwest
Topic: Trees
Title: Twig girdlers attacking an Elm tree in Wimberly, TX.
Answered by: Jimmy Mills

QUESTION:

I was looking at my small 6' cedar elm and noticed that four (4) 1/2" limbs have circle cuts a 1/8" wide completely around them and they are dead. Is this some insect or maybe a bigger critter? I have several other cedar elms and they are not affected.

ANSWER:

 It sounds like your elm tree has been visited by a twig girdler, a type wood-boring beetle. Texas Agricultural Extension Service of Texas A&M University has an excellent publication, Wood Boring Insects of Trees and Shrubs , with information to help identify your particular pest and how to control it.

Other useful sources of information can be found at:

Texas Agricultural Extension Service

University of Nebraska Extension

Check this site for some good beetle images

 

 

More Trees Questions

Watering live oak trees from McAllen TX
December 24, 2012 - What are the watering requirements for live oak trees in deep south Texas? How often and how many inches to be applied? One pop-up spray sprinkler spaced approximately fifteen feet away from each tr...
view the full question and answer

Leaves dropping from a potted Mesquite
August 11, 2014 - I have a Prosopis pubescens (Screwbean Mesquite) that I purchased at a nursery in Alpine, TX just a few miles away from me. It was a in nursery style black plastic container. The mesquite is perhaps a...
view the full question and answer

Need a shade tree for an enclosed courtyard in Las Cruces, NM
September 24, 2012 - I HAVE A WEST FACING COURTYARD ENCLOSED WITH A 6' STUCCO WALL AND I WANT TO ADD A SHADE TREE. CURRENTLY HAVE SEVERAL MESQUITE TREES, DESERT WILLOW, CHINESE PISTACHE & VITEX TREES IN THE FRONT AREA ...
view the full question and answer

Problems with Acer rubrum in Sacramento
September 06, 2009 - We live in Sacramento California and have two seven year old Magenta Maple trees in our front yard that are planted about 65 feet from each other. This is the second year in a row that the tree on th...
view the full question and answer

Quercus polymorpha botanical name for Mexican white oak
June 19, 2007 - What is the scientfic name for the Monterrey Oak?
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