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

Friday - July 13, 2007

From: Dripping Springs, TX
Region: Southwest
Topic: Diseases and Disorders
Title: Advisability of trimming oak trees in August
Answered by: Damon Waitt

QUESTION:

In general,what is your opinion on pruning oak trees in August? If it is positive, should the extreme moisture of this year affect the timing?

ANSWER:

New oak wilt centers are started when a contaminated beetle finds a fresh wound on a healthy oak tree. In general, the heat of summer and the cold of winter are the best time to prune to prevent an oak wilt infection because beetle populations are lowest.

That said, insect populations, in general, increase during mild spring like weather and mild spring like weather is when oak wilt fungal mats are most likely to form. So, the most likely time a contaminated beetle will find your tree is when the weather is mild. Given the mild and moist summer we have been having in central Texas, Mr. Smarty Plants would advise not to risk infection by wounding your oaks in August.

If you choose to prune in August, the Texas Forest Service recommends that you always paint pruning cuts as soon as the cuts are made. When pruning cuts are made during the proper times of the year there still maybe a few contaminated nitudulid beetles in the area. If the pruning cuts are painted with a pruning paint or latex paint this will prevent these sapfeeding Nitidulid beetles from feeding and infecting your oak tree with the oak wilt fungus.

To learn more about oak wilt identification, management, and prevention, visit www.texasoakwilt.org.

 

More Diseases and Disorders Questions

Problems with non-native St. Augustine lawn from Austin
October 06, 2013 - We have St. Augustine in our front lawn. There are some patches where the grass has entirely died but mixed in with the dead areas are little clumps of living grass. It seems to be spreading througho...
view the full question and answer

Controlling nematodes on lantana from San Antonio
September 19, 2012 - Can anything be done to "fix" root knot nematode on older lantana. Next to other lantana. Pull them out or try organic fix?
view the full question and answer

Rust problems on Jack in the Pulpit in IL
June 12, 2011 - The last 2 years I have noticed that some of my jack in the pulpit plants have something that makes me think of a copper color rust.It seems to start on the underside of the leaves. What can I do to g...
view the full question and answer

Problem with Prosopis glandulosa (Honey mesquite)
February 27, 2014 - One of our mature Honey Mesquite trees is losing thumb sized branches high up in the canopy because something is stripping the bark. The branches are completely white for 8-12 inches. Of course the ...
view the full question and answer

Oak diseases as a result of wet, cool weather
July 25, 2007 - The mature live oak trees in our back yard have been dropping leaves just like they do in March, but this is July! Small to medium spots on the leaves turn brown before they drop. The veins of the l...
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