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

Wednesday - June 07, 2006

From: Coppell, TX
Region: Southwest
Topic: Diseases and Disorders
Title: Diagnosis of problems with Texas ash
Answered by: Joe Marcus and Dean Garrett

QUESTION:

Our 15 year old Texas ash has less leaf production this year. It also has a small amount of algae on the trunk, and some of the branches have small white spots on it. Also, a few of the branches closest to the trunk have died. Any suggestion would be appreciated.

ANSWER:

Possibilities:

Fusicoccum Canker could cause branches to die and might be responsible for the white spots on the branches.

If by “algae” on the trunk you mean a fungus, a fungal rot like Varnish Fungus Rot or Sulfur Fungus Rot could be responsible; they can also cause limb death.

There are several foliar diseases of ashes that might have caused leaf loss, anthracnose being only the most common. It, however, has many symptoms that don't seem to match yours, based on your description.

This list of ash pests with diagnostic descriptions can help you match your symptoms with known ash diseases and get ideas about how to control them, and this discussion of White Ash contains an informative section toward the end about common diseases of that tree. Texas Ash (Fraxinus texana) is so closely related to White Ash (Fraxinus americana) that many taxonomists consider it to be just a variant of White Ash, so any information you find about White Ash will probably apply to your Texas Ash.

You might consider having your tree diagnosed by the Texas Plant Disease Diagnostic Laboratory. You can contact your county office of the Texas Cooperative Extension to determine how to send a sample. Having an arborist look at your tree is another idea.
 

More Diseases and Disorders Questions

Corona de Cristo, guest or pest?
July 12, 2008 - We have had two recent speakers at the Austin Butterfly Forum with differing views as to whether Passiflora foetida is invasive in Texas. One believes that it's well-behaved and a a great butterfly ...
view the full question and answer

Long-legged bugs eating roses in Richmond VA
May 22, 2011 - There are bugs eating my roses. What can I do? They look like long bugs with a lot of legs.
view the full question and answer

Verticillium wilt in catalpa and maple
July 17, 2008 - On Monday - July 07, 2008, you answered a question about a catalpa and maple with the same problem--an entire branch died, and then more of the tree died. And both trees came from the same nursery. Th...
view the full question and answer

Native firebush dying in Sun City Center FL
July 17, 2009 - I have a native firebush, it is suddenly dying branch by branch, from the inside out, I have noticed odd things look like wasps but with speckled wings on it. What could be killing it. The inside bra...
view the full question and answer

Fungus on spineless prickly pear in Hico TX
January 03, 2010 - Is there anything I can do to save my spineless prickly pear planted 3 yrs ago in rock garden. Pods had grayish-white fungus? on the pods and I noticed a few green colored bugs on them. Bugs are gone-...
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 | STAFF
© 2015 Lady Bird Johnson Wildflower Center