En Español

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

Friday - September 20, 2013

From: Dripping Springs, TX
Region: Southwest
Topic: Diseases and Disorders, Pests
Title: Berry-looking parasites on live oak leaves
Answered by: Nan Hampton

QUESTION:

Dripping Springs TX Live oaks. What are these berry looking parasites on my tree's leaves. As many as 4 1/4 in berries per leaf. I have 3 acres with dozens of liveoaks all having them on the leaves

ANSWER:

They are galls caused by the trees reaction to insects laying their eggs in the leaves. The tree's tissues expand and grow around the developing egg and the resulting larvae that feeds on the plant tissue before emerging as an adult.  The galls may not be aesthetically attractive but they are not especially deleterious to the trees.  There is really no way to "treat" them since the insect is safely ensconced within the gall and won't be reached by any insecticide.  Here are some articles related to galls from Texas A&M Texas Plant Disease Diagnostic Lab and from Texas A&M AgriLife Extension.  Here are photos of oak leaf galls caused by Belonocnema tratae and more photos of oak galls from the Central Texas Gardener blog.

 

More Pests Questions

Treating cuts in tree trunks
November 21, 2009 - We have two young trees that deer made bad cuts in the trunks. What can we put on cuts to keep bugs and disease from getting in them.? Thank you.
view the full question and answer

Insect damage to Meyer lemon in Texas
February 19, 2015 - Dear Mr. Smarty Plants, I have a Meyer Lemon tree in Galveston. It produced a lot of lemons. However, something has bit up to quarter sized holes from the side edges of the leaf. Could you please...
view the full question and answer

Shade Tolerant Groundcover for Texas
July 13, 2016 - I live in Atascosa county in Pleasanton Texas, I have an abundance of Live Oak and Ash trees shading my property and need a groundcover for my backyard which is nothing but sand and where I have dogs ...
view the full question and answer

Dog-proof grass from The Woodlands TX
April 26, 2013 - I am looking for a hardy grass that can tolerate female dogs urine. Zoysia was suggested but I am concerned about it being invasive. Any suggestions?
view the full question and answer

What's attacking my Nellie Stevens Holly plants in Iredell, TX?
June 27, 2011 - I just bought 10 Nellie R. Stevens holly bushes and planted them as a screen. The leaves on some of the plants are at least half white - not yellow but white. Apparently they were like that when I b...
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | JOBS | SITEMAP | STAFF INTRANET
© 2016 Lady Bird Johnson Wildflower Center