En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - Scrub oaks dropping limbs in Lexington TX

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 - August 23, 2009

From: Lexington, TX
Region: Southwest
Topic: Trees
Title: Scrub oaks dropping limbs in Lexington TX
Answered by: Barbara Medford

QUESTION:

We live in the country between Elgin and Lexington. One of our "scrub" oaks is dropping large limbs. On examination, the limbs have green leaves and they do not appear to be rotted. Do you think the cause is extreme lack of rain or disease?

ANSWER:

We are a little puzzled (as we usually are about common names) as to what plant you are referring to. We found four members of the Quercus (oak) genus with the common name "scrub oak" in our Native Plant Database, but only two of them are native even to Texas, and none to the actual area of Lee County you are referring to. These oaks are Quercus mohriana (Mohr oak), native to the Big Bend area and portions of the Panhandle, and Quercus turbinella (Sonoran scrub oak) which just shows up in a couple counties in the far western tip of Texas. 

Whatever the scientific name of the trees you are concerned with, there is no doubt that the heat and drouth are a contributing factor to many of the plant problems we are experiencing in Central Texas.  Whether that is the only cause of the problem or there is another cause, pest or disease, we have no way of knowing, that's a little out of our line. You can bet if you are having that trouble, others in your area are, too. The best way to contact an expert who not only knows what plant you have, but what is causing the problem and, hopefully, what to do about it is to go to this website for the Texas A&M AgriLIFE Extension Office for Lee County.

Pictures of Quercus turbinella (Sonoran scrub oak)

From our Native Plant Image Gallery


Quercus mohriana

Quercus mohriana

 

 

More Trees Questions

Trees Planted Over Underground Parking Garage
July 13, 2014 - I live in an apartment complex. We have trees planted over an underground parking lot. I know the names of all the trees and I want to know how much soil they should be planted in to NOT cause damage ...
view the full question and answer

Non-native crape myrtles in Noblesville IN
August 01, 2012 - Can Crepe Myrtle trees be grown in Noblesville IN 46060? I believe we are zone five.
view the full question and answer

Plants for area around pool in Plano, Texas
October 13, 2009 - I just built an in ground pool in Plano, Texas and now want to landscape around it on my own. I am curious what plants/shrubs you recommend. There will be plants/shrubs on three sides of the pool. ...
view the full question and answer

Removing yaupon hollies from yard in Austin
July 04, 2009 - We recently moved into a home w/ way too many and much too large (20-30') yaupon holly's in the back yard. I had some of them cut down, but they keep coming up from the roots of the old trees. How ...
view the full question and answer

Mexicana Redbud failing to bloom in Austin
April 12, 2010 - I have a Mexican Redbud that I bought last fall. It is now April (I'm in Austin), and the leaves have emerged, but the tree did not flower. So . . . what should I do to get it to flower? (The tree i...
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