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

Wednesday - June 20, 2012

From: Austin, TX
Region: Southwest
Topic: Diseases and Disorders, Trees
Title: Wound in Monterey Oak from Austin
Answered by: Barbara Medford

QUESTION:

I have a 10 year old Monterey Oak that has developed a wound that is secreting a white bubbly substance that has attracted all the bugs, like butterfly's , pill bugs, ants, and several others I don't know the name of. I have sprayed it off with water but the sap comes right back. Can you tell me what to do.

ANSWER:

Our first thought on reading this was "Oh, no! Oak Wilt!" However, Quercus polymorpha (Mexican white oak) is (obviously) a white oak, which is not as susceptible to Oak Wilt as the red oaks and live oaks. However, Austin is deep in Oak Wilt country, and we feel you should read all of this Texas Oak Wilt website, and if you feel it is possible that one of the bugs gathered around that sap drip is the nitudulid beetle you should contact:

Eric Beckers
Travis and Hays counties
Texas Forest Service Project Forester
6330 Highway 290 East, Suite 115
Austin, TX 78723
512-339-3772
ebeckers@tfs.tamu.edu

You also should consider how that wound was made to the tree. Construction equipment, lawnmowers, even weedeaters can be the guilty parties. Once the sap has  begun to flow, it can attract a nitudulid beetle that has just visited an infected tree and is carrying the fungus on his body. The best prevention of Oak Wilt is to avoid any damage to an oak tree.

 

From the Image Gallery


Mexican white oak
Quercus polymorpha

Mexican white oak
Quercus polymorpha

Mexican white oak
Quercus polymorpha

More Trees Questions

Mulching tree root in San Angelo, TX
April 02, 2014 - San Angelo, Texas is in a drought stage. Will it help our trees to mulch the base of them?
view the full question and answer

Small tree for Huntingdon Beach, CA
November 09, 2008 - I have the exact same question as a previous tree question from Huntington Beach California. When I click on the answer it brings up another question. I would like to know the answer given for the 10 ...
view the full question and answer

Selection of a small variety of Desert Willow for SE Texas
August 02, 2011 - Looking to plant desert willow as shrub. Any helpful tips to keep height down and plant full or bushy.
view the full question and answer

Screening Suggestions in Brooklyn, NY
March 08, 2013 - My neighbor directly in back of me has shrubs that are growing all over my fence. Also his 9-foot-tall shed facing me is rusted. What can I do to improve my view so that I can enjoy my backyard more?
view the full question and answer

Native Texas tree for anniversary in Austin
May 20, 2009 - My husband and I would like to plant a tree in our yard commemorating our 5 year anniversary (wood anniversary). What native Texas tree can we plant in June? I love Red buds and any pretty blooming ...
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