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
1 rating

Saturday - July 13, 2013

From: Arlington, TX
Region: Southwest
Topic: Diseases and Disorders, Trees
Title: Problems with red oak trees in North Central Texas
Answered by: Nan Hampton and Eric Beckers

QUESTION:

What is the disease effecting Red Oak trees in North Central Texas; causing them to lose leafs in Spring/Summer and turning the remaining leaves light yellow/lime green in color. Thank you.

ANSWER:

To answer your question, I contacted Eric Beckers, Forester, with the Texas A&M Forest Service Project in Austin.  He, in turn, asked for input from Courtney Blevins with Cross Timbers Urban Forestry Council that includes your area of North Central Texas.  Here is what Eric (and Courtney corroborated) said about your trees' problems:

"Our main threats to red oaks in North Central Texas are oak wilt, drought related secondary insects (borers) and diseases (hypoxylon), and urbanization (bulldozer blight).  Bacterial leaf scorch can cause chlorosis and dieback and is usually accompanied by a large amount of marginal burn and defoliation.  But far too often the chlorotic oaks we witness are ones that should have stayed in Louisiana or Arkansas where they came from.  In other words, their genetics were just not right for our high pH soils and they develop nutrient deficiencies that usually cannot be corrected.  These off-colored oaks are often less then 10-20 years of age and usually exhibit twig dieback and are typically short lived.

The answer is to plant trees grown from seed sources collected in a similar habitat or ecoregion.  Not always an easy task, but the best nursuries will most often carry plants that will adapt to their market's environment.  We should plant native Texas red oaks and possibly western seed source Shumard oaks in Central Texas, not East Texas seed sources or hybridized (another issue) red oaks that do best in more acidic and moist soils found the other side of the Sabine River."

Here is the Texas Forest Service link to diseases and insect pests.

You can visit the Texas A&M Forest Service Urban Forestry page to find contact information for the office in your area.

You can find the names and contact information for Certified Arborists in your area on the Texas Chapter of International Society of Arboriculture page.

 

More Trees Questions

Eastern Redbud Flowers and Leaves Dried Up
June 12, 2014 - I have a young Eastern Redbud that started blooming last year. This year blossoms formed and leaves started to come, but now they are all dried up. What might have caused this?
view the full question and answer

Germinating Mexican Persimmon seeds in Austin, TX.
November 15, 2011 - I'm planning to germinate Mexican Persimmon seeds, and plant them this spring. I want a female for fruit. Is there any way to encourage a plant to be female, and if not, is there any way you can iden...
view the full question and answer

Proper watering of cedar elm trees in Sachse, TX
August 15, 2008 - I've just planted two Cedar elm trees in clay soil, each about four inches in diameter, and I want to water them correctly. I'm aware that too much water can be bad as well as too little water. I ...
view the full question and answer

Fasciation on Texas Mountain Laurel
November 21, 2012 - Do Texas Mountain Laurel normally have a staghorn looking growth hanging on them after blooming in addition to the seed pod clusters or could this be a mutation?
view the full question and answer

Small oak tree with powdery mildew in San Antonio, TX.
May 09, 2012 - I have a small oak tree with powdery mildew. Is there anything I can do about? Will it kill the tree?
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