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
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 hibiscus in Florida
November 09, 2008 - Have a hibiscus in Florida. It has always done beautifully planted in the ground. This year, it has developed something where the branches are sort of white, and the buds (and ends of branches) look ...
view the full question and answer

Beneficial earthworms attacked by fire ants
August 04, 2006 - Is there a right way or a trick to releasing earthworms? I have a friend who has an abundance of earthworms in their soil so I took advantage of the situation. I released them in my freshly tilled gar...
view the full question and answer

Hibiscus plants being attacked by powdery mildew, or maybe mealy bugs in Austin, TX.
August 10, 2011 - I have three hibiscus plants planted outside about a foot apart from each other. The one that gets most of the sunlight is the worse off of the three. However, all three of them have white powdery stu...
view the full question and answer

Problems with non-native photinia in Austin
October 07, 2013 - Hi, I live in Cedar Park, TX (Austin Suburb)and have planted a number of Photinia shrubs in various areas of my property. All about 10 months old. The leaves are curling along their length on many...
view the full question and answer

Saprophytic fungus on mulch
June 22, 2007 - I just did some major landscaping in my west Austin, TX backyard. I added many native plants and mulched all of the new beds. I did this just before the heavy rains in the past two weeks. I now not...
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