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

Restoration of mistflowers suffering from wet season
June 27, 2007 - I have planted gregg's mistflower in a bed that receives morning sun and afternoon semi-shade. It was beautiful and covered with blooms and butterflies this spring, but suddenly has become brown and ...
view the full question and answer

Need help with my 25 yr old Mountain Ash in Clinton Township, MI.
July 11, 2011 - For the first time our 25yr old mountain ash tree has dying branches, we removed one branch and it seems to have spread to other branches? What should we do?
view the full question and answer

Non-native Boulevard Cypress Pom Pom trees in Princeton NJ
October 29, 2011 - I just had some landscaping done near my front door and front yard. I have two Boulevard Cypress B&B (4-5') Pom Pom. The pom poms are turning brown. What should I have been doing? I am watering them ...
view the full question and answer

Problems with recently planted trumpet vine from Worcester MA
October 20, 2012 - Dear Mr. Smarty Plants, I have a question about my recently planted Trumpet Vines. First of all, I live in Massachusetts, zone 6. The soil is perfect for the two vines, which I bought from a local nur...
view the full question and answer

Wilting American Smoke Tree in Texas
April 21, 2013 - I planted a young American smoke tree last fall (mid-November) and it put out a good show of tentative new leaves this spring. Then to keep the tree form I clipped some little shrubby start ups at the...
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