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

Friday - October 09, 2009

From: Austin, TX
Region: Southwest
Topic: Trees
Title: Brownish haze on live oak leaves in Austin, TX.
Answered by: Joe Marcus

QUESTION:

My live oak tree leaves are getting a brownish "haze" on them, almost as if they have been spray painted (lightly) with brown paint. I did use the oak wilt identifier and that is not at all what it looks like. What could it be? It started with one of my trees (I have 9 on my property) and now it's moved to another. We planted them 3 years ago, and they have been mostly thriving. The first tree to show symptoms was planted (accidentally) along a fault line between the existing clay soil and the back fill from the developer of our community, and we had been having trouble with cave-in of the soil around the roots. We did remedy that situation, and attributed the leaf-browning to perhaps air pockets around the roots. However, the second tree to show the same symptoms was planted in stable earth, and is actually the largest of our trees, having grown the most since planting.

ANSWER:

We have noticed it, too.  While we are not certain of its cause, we suspect the severe drought, possibly combined with the unusually hot weather this summer took its toll on either the chlorophyll, the chloroplasts in which the chlorophyll is contained or entire cells within tissues of the oak leaves. 

Usually considered evergreens, live oaks are actually deciduous trees that shed their leaves in late winter or early spring just as new leaves are emerging.  When the new leaves appear on your trees in February or March of next year they should be a healthy, green color.

 

More Trees Questions

Information about FanTex ash.
April 29, 2008 - I live in central Texas and recenty planted Fan-tex ash trees thinking that they were similar to the native Texas ash. I am beginning to beleive that this tree has more in common with the Arizona ash...
view the full question and answer

Looking for a Privacy Barrier Plant for NC
August 21, 2014 - I am trying to determine the best plant for a privacy barrier for my area in NC that has clay soil. I have a 6 foot high fence but need something 12 feet or taller. It has to be something that does no...
view the full question and answer

Is mulberry tree inhibiting growth of plants under it in Wilmington DE?
June 21, 2009 - I have a large mulberry tree in my yard and the plants around it are not flowering or growing, some are now dead. Could the mulberry tree be toxic to other plants?
view the full question and answer

Are Eastern White Pine suitable for Waxhaw NC
February 13, 2011 - Pinus strobus ( White Pine )- I wish to plant four of these evergreens along our property lines as a screen. Our county is selling one foot plants in a container. Our soil is clay. Are these t...
view the full question and answer

How Do Persimmons Breed - Starkville, MS
August 14, 2012 - Thank you for your earlier response about the genders of native persimmon trees. We have two, a much larger one that has borne fruit for years and years and a smaller one that I'd just assumed was m...
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