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

Thursday - June 11, 2009

From: Cedar Park, TX
Region: Southwest
Topic: Trees
Title: Curling lower leaves on live oak in Cedar Park, TX
Answered by: Barbara Medford

QUESTION:

I have noticed that one of my live oak tree, the leaves on the bottom of the tree have stared to curl. The leaves above that look fine. The trees are about 12 yrs old. Any suggestions?

ANSWER:

Since you live in either Northern Travis County or Williamson County, we are going to assume that you have a Quercus fusiformis (plateau oak), which is native to that area. Unfortunately, we cannot begin any discussion of problems with a live oak without talking about Oak Wilt. To give you more information about the appearance and symptoms of this disease, see this USDA website Identify, Prevent and Control Oak Wilt.  

There are two other possible reasons for the curling of the leaves, Oak Anthracnose and Oak Decline. Oak Anthracnose, while it causes curling and discoloration on lower leaves, seems to affect only white oaks, not live oaks. Ditto with Oak Decline, which is most often caused by insects or diseases that invade a tree already in trouble for some other reason.

It is almost impossible to diagnose a plant disease without seeing it. You would be advised to contact someone who is trained in the recognition of oak diseases and arrange to have the tree examined. Go to the Texas Oak Wilt Partnership webpage for some suggestions on how to get help. Another valuable source of information on tree diseases is the Texas A&M AgriLIFE Extension Office for Williamson County. There is always the possibility that some insect of which we are not aware is causing this type of symptom in your area. The website has contact information, and they possibly even can give you a source for diagnosis.

 

More Trees Questions

Propogating snowbells from Elmendorf TX
June 06, 2012 - Is it possible to propagate Styrax platanifolius and Halesia diptera from cuttings? If yes, what is the process?
view the full question and answer

Cherry Laurel for North Central Texas
May 16, 2010 - I want a small evergreen tree (approx 20'x 15')and would like to plant a Cherry Laurel. Would this be a good choice in North Central Texas (DFW area)? If not, any suggestions? Thank You.
view the full question and answer

Safety of hyrbrid and non-native trees for dogs and horses from Lawton OK
March 25, 2013 - Are Arrowwood Viburnum tree, Sargent Crabapple tree & the Washington Hawthorn tree safe for dogs & horses?
view the full question and answer

Why is cedar pollen so heavy this year?
January 08, 2011 - Dear Mr Smarty, Is this year a heavier than normal year for cedar pollen?? If so why?
view the full question and answer

Native plants both deer resistant and good for erosion from North Oaks MN
August 23, 2012 - We have several partially sunny areas on hills that are prone to both deer and erosion. Our goal is to reduce runoff in an effort to preserve the watershed that provides tap water to many citizens of ...
view the full question and answer

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