En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - Diagnosis of problems with Texas ash

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

Oak Bark Loss in Arlington, TX
May 04, 2013 - I have multiple oak trees in my yard (in north texas) that have begun to lose their bark in small chunks. I'm in the middle of the city so their are no deer and yes it's been a dry 2 years but this...
view the full question and answer

What to do about powdery mildew on Pavonia lasiopetala?
June 02, 2009 - My Pavonia lasiopetala seems to have gotten mildew this spring. I was hoping that warm weather would get rid of it. Instead it has spread to most of the plants which are located in widely separated b...
view the full question and answer

Century plant leaves yellowing from Magnolia TX
July 04, 2013 - The leaves on my large Agave/Century plant are turning yellow. The bottom leaves, touching the ground are dying. Plant is 5.5" tall, 6" across & approx 10 yrs old. Recently we put red mulch around t...
view the full question and answer

Mutation in bluebonnets from Elgin TX
April 16, 2013 - What causes bluebonnets to mutate..grow as if three or four are combined into one flower on one very flat, wide stem. I have these in my yard; they are beautiful! I have taken several pictures.
view the full question and answer

Freeze-damaged Texas Mountain Laurel in Austin, TX.
May 05, 2011 - I have a Texas Mountain Laurel (Sophora secundiflora) that is several years old. During this past winter, one of the freezes we had split one of the largest trunk right below the soil line. 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