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 - 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

No acorns on mature live oak in Little Rock AR
April 18, 2010 - Why does my very large mature live oak have no acorns?
view the full question and answer

Disagreement on amending soil for planting from Austin
September 01, 2012 - In today's newspaper column, you answered a question about transplanting a redbud. You said to follow the instructions on the WFC web site, except you recommended adding compost to the backfill soil....
view the full question and answer

Shade trees not toxic to dogs in Kempner TX
August 21, 2013 - Dear Mr Smarty Plants, we are looking for shade trees to plant around our home in Kempner, Tx. I saw another family that asked a similar question but we have dogs and holly or oak trees are toxic (my...
view the full question and answer

Why so many acorns in Houston?
November 16, 2009 - My son's home in Houston has a Live Oak. This year it has dropped MILLIONs of the seed pods. This hasn't happened in the nine years of living there. Is anything wrong with it? It looks OK but he ...
view the full question and answer

Propagating a Magnolia tree from a twig cutting in New Hampshire.
November 02, 2011 - I have a twig cutting from a rare magnolia tree I found on a farm in central New Hampshire. The tree seems to be at least one hundred years old. It was in full bloom in late August and I was told by t...
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