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

Sunday - June 08, 2014

From: round rock, TX
Region: Southwest
Topic: Diseases and Disorders, Trees
Title: Live oaks exhibiting white foam spots from Round Rock, TX
Answered by: Barbara Medford

QUESTION:

We have several native very large Live Oak in our backyard, and this summer we have noticed white foam spots on the branches. We live in Round Rock next to the Williamson County Park. The spots look like sores on the tree, and the white foam is very sticky, and is spreading to other trees. The leaves on the tree still appear green and healthy. The bark, however, appears to be shedding where these foamy spots are. The spots exist from about 6 ft to 50 ft up the tree, each spot being about 1cm. I have some photos I would love to attach..

ANSWER:

We are sorry, we are no longer able to accept photographs. We will search on some other oak diseases with which we are familiar, and see if we can match your symptoms up to some known tree disease. Please read this article from the Texas A&M AgriLife Cooperative Extension on Major Oak Diseases and their Control. Then, we urge you to contact a local, licensed arborist and ask them for a diagnosis and suggested treatment. DO NOT bring someone in who wants payment in advance and who insists they have a spray that will kill anything. It probably would. We cannot possibly make a diagnosis at a distance and, as volunteers, we don't make house calls. In Texas large trees are treasures, and large live oaks trees are golden treasures so be prepared to do what you have to do. It will be worth it in the long run.

 

More Diseases and Disorders Questions

Leaf problems on Cherry Laurel in Boulder City, NV
January 29, 2011 - I live in Boulder City, Nevada and have 4 cherry laurel trees. I'm having a hard time with brown leaves and loss of leaves. How much water should I give them each season? Temps run from 28 degrees to...
view the full question and answer

Cool, wet summer effect on evergreen sumac
August 28, 2007 - Hi Mr. Smarty Plants, I have 3 evergreen sumac bushes that I planted as a screen between my house and my neighbors two years ago. They are located in a part of our yard that receives a lot of runof...
view the full question and answer

Grasshopper-resistant landscape plants?
May 20, 2009 - We have a ton of grasshoppers in our area. I would like to plant bushes and flowers that the grasshoppers will not eat. Can you suggest any??
view the full question and answer

Petals not developing on blackeyed susans from Nashville TN
July 05, 2011 - I have an established "patch" of black eyes susans. This year, the leaves are beautiful, the centers black..but the petals are practically non existent. They didn't seem to develop correctly. Any...
view the full question and answer

Strange growth on oak tree
August 26, 2008 - i have a very strange round segmented growth on a tree in my yard. i think the tree is a chinkapin oak and the growth is a reddish color. it looks like a ball with suction cups on it. it is very st...
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