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
Not Yet Rated

Sunday - April 24, 2011

From: Elgin, TX
Region: Southwest
Topic: Diseases and Disorders
Title: Weeping live oak and beetles in Elgin TX
Answered by: Barbara Medford

QUESTION:

I have a live oak that I just noticed is weeping from a small spot about 3' above ground, foamy and smells like beer, several beetle species attracted. Also some very small insects in the foamy area.

ANSWER:

Oh, dear, we hate to hear that. Tis the season, I guess. Because we just answered a very similar question, we are going to largely repeat it to save time. Read on.

We are assuming your live oak is Quercus fusiformis (Escarpment live oak), which is native to Texas and to Central Texas. We are going to refer you to several sites where you can get more information, but we urge you to contact a professional arborist to come and look at the tree right away. Read this article on Oak Wilt from the Texas Oak Wilt Information Partnership. According to this Texas Forest Service list of contacts, Elgin, in Travis County, is in the Austin area. There is contact information for the Forest Service on that page. This map shows the Texas counties with Master Gardener/Master Naturalist Oak Wilt Specialists and also those with Oak Wilt active, which includes Travis and Bastrop. We would suggest you contact the Travis County or the Bastrop County Extension Office for more help.

Don't, whatever you do, trim or prune any live oak tree until at least mid-summer, and November 15 to January 15 would be better. Oak Wilt is spread by interconnected roots of oak trees but it is also spread by the nitiludid beetle. When an oak tree is damaged, even by pruning, it will exude sap which the beetle loves. If he has already been to a diseased tree and fed on the sap, he will have picked up some of the fungus that causes Oak Wilt on his body. If your tree is diseased, he will pick up the disease from the sap from it and take it to other oak trees. Please read all the information we have linked you to and act as soon as you can.

 

More Diseases and Disorders Questions

Failing to thrive of non-native rose bushes in Austin
September 24, 2012 - I live in NW Austin and I have lost one knockout rose bush this summer and it looks like another one is failing. The leaves on a cane turn yellow then brown. I do not see whiteflies or black spots o...
view the full question and answer

Sap dripping from a lacey oaks in San Antonio
September 06, 2012 - I have a lacey oak tree, approximately 6 ft. tall that has been in the ground almost a year. The tree looks healthy but there is a small area on the trunk that looks and feels wet. The substance is s...
view the full question and answer

Non-native sedum 'Burrito' sunburned in Providence RI?
June 28, 2010 - I have a sedum burrito that I keep outside and receives bright sun for around 6 hours a day. it looks like it's getting sunburned, the leaves are getting shriveled and browning on the tips. I've bro...
view the full question and answer

Spots on persimmon tree leaves from Dripping Springs TX
July 10, 2013 - We are in rural Hays County Texas off Hamilton Pool Rd Texas. Large persimmon trees are turning yellow, blackish spots on underside of leaves. What do we do?
view the full question and answer

Is Sabal minor juglone tolerant?
October 13, 2014 - Is Sabal minor or any other small and shade tolerant palm juglone tolerant? Id like to plant one in an area near a pecan tree but I am not sure if they will play well together.
view the full question and answer

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