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 - April 20, 2012

From: Sun City, AZ
Region: Southwest
Topic: Pests, Trees
Title: Problems with Texas Ash from Sun City, AZ
Answered by: Barbara Medford

QUESTION:

What might be causing the leaves on my Texas Ash tree to have brown spots and curl up and die?

ANSWER:

For openers, our Native Plant Database lists Fraxinus texensis (Texas ash) as being native only to a strip down the center of Texas and a small part of Oklahoma. We understand it is rare in the trade. Sometimes trade names are used that do not match up with the common name usually accepted for a plant, so  it may be that your tree is either some other ash or is a hybrid, which means it will not appear in our database.

Another possibility is that you have a cultivar of Fraxinus velutina (Arizona ash) with the trade name of Fan-Tex. Here is a previous Mr. Smarty Plants answer that will give you some information on that. This USDA Plant Profile Map shows the Arizona Ash does, indeed grow in Maricopa County, while this map on Fraxinus texensis (Texas ash) does not show it growing in Arizona at all.

There are so many things that can cause ash leaves to exhibit the symptoms that you list, we are going to refer you to a website from Iowa State University Common Problems of Ash Trees that has pictures and descriptions. Once you have read that, we suggest you contact the University of Arizona Extension Office for Maricopa County. Regardless of which ash tree you have, if others are having the same problem the people in the Extension Office should know about it. 

 

From the Image Gallery


Texas ash
Fraxinus albicans

Texas ash
Fraxinus albicans

Arizona ash
Fraxinus velutina

More Pests Questions

What clips green twigs from cedar elms?
August 09, 2013 - Many small cuttings (3-5 inches long) are dropping from large cedar elm. To my eye the ends look like breaks (not chiseled), but I can't imagine what would cause so many breaks, and so think somethin...
view the full question and answer

Identity of small objects that look like tiny pecans
November 14, 2013 - Dear Mr. Smarty Plants, I am doing my science fair project on acorns. Last year I measured how many acorns and other nature-y stuff fell into a baby pool from a live oak tree in my backyard every ...
view the full question and answer

Ravaged by snails
May 23, 2007 - Our Prickly Pear Cactus is being completely ravaged by snails. Is there something in my yard that could be attracting them? Is there something I can do to keep them off the plant? Also is is safe to...
view the full question and answer

Eliminating wood roaches from hardwood mulch from San Antonio TX
February 05, 2013 - How can I eliminate the numerous wood roaches in my hardwood mulch that I get for free from the city of San Antonio?
view the full question and answer

Weeds in Buffalograss from Edmond OK
September 20, 2012 - We have a patch of buffalograss surrounded by patio/flower garden/vegetable garden. We like B-grass, but are getting a lot of weeds despite preemergents, and some bermuda had appeared. Are there h...
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