En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - Something eating Arizona ash in Gilbert AZ

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
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

Problems with non-native weeping willow
April 17, 2009 - The trunk of my Weeping Willow tree has raised donut growths.The left base has decay. There is a large space between the base and the soil (no roots) and the wood is brittle. Large ants with a black ...
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

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

Browning leaves on Ilex vomitoria in Houston
July 02, 2009 - Houston, we have a problem!!! I have a number of yaupon bushes that have been in my yard for years that have a large number of leaves turning a solid dark brown color. Any ideas of the cause?
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

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