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
1 rating

Wednesday - May 11, 2011

From: Gilbert, AZ
Region: Southwest
Topic: Diseases and Disorders
Title: Something eating Arizona ash in Gilbert AZ
Answered by: Barbara Medford

QUESTION:

Something is eating my Arizona ash tree. what should I spray on it?

ANSWER:

The first thing we do when we are trying to diagnose a problem with a plant is to find out if it is native to the area where it is growing. A plant growing where it is not native may be having trouble with soil that has the wrong pH, or less rainfall that the plant is accustomed to, extreme heat, extreme cold, etc. However, the Fraxinus velutina (Arizona ash) does, indeed, grow natively in Maricopa Co., Arizona.

The main pest we found mentioned in connection with the genus Fraxinus is the borer, and the worst of the borers is the Emerald Ash Borer, from an Invasive.org article on the problem. These are introduced beetles from Asia that came into the United States in about 2002 on wood used in cargo bays of ships. The early mentions of this bug are all centered in the Northeast and Midwest, but we understand it is spreading fast.

Since we are not entomologists, we suggest you contact the University of Arizona Cooperative Extension Office for Maricopa Co.  They are closer to the problem and can probably tell you very quickly what is making holes in your tree and what you can do about it.

 

More Diseases and Disorders Questions

Yellowing leaves
May 06, 2008 - What causes yellowing of native garden plant leaves?
view the full question and answer

Failure to flourish of Trumpet Creeper in Leesburg VA
June 28, 2011 - Dear Mr. Smarty Plants: Late last year I planted a trumpet creeper vine to grow on my fence and attract hummingbirds. It gets full sun, is in average soil and gets adequate water. I put a few daylilli...
view the full question and answer

School project on acid rain effects on plants from Austin
October 18, 2013 - Hi I go to an Austin high school and I am doing a project on how acid rain affects plant growth. I am wondering if you know any plants that would be more or less susceptible to acid rain for this proj...
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

Location of Alamo fungicide kit from Georgetown TX
July 03, 2012 - Where can I buy the Alamo fungicide injection kit shown in the oak wilt video?
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