[Arid_gardener] Carpenter Worms in Ash Tree

[Cathy.Rymer at chandleraz.gov]

Hi Brad,

Thanks for your question.  Ash trees are especially vulnerable to 
damage/death caused by the carpenter worm, the larval form of the Leopard 
Moth. Dozens of Shamel ash trees were wiped out on John Wayne's ranch near 
Maricopa about 6 - 8 years ago. The problem was thought to be localized 
until trees started
dying in the southeast valley near Queen Creek. Now the carpenter worm has 
been found in Mesa, Gilbert and Chandler and has recently been
identified in the central Phoenix area. Here is a link to a report by Dr. 
Andrew Backhaus on the carpenter worm.  This is a serious problem.
http://www.artistic-arborist.com/Dec_2004.htm 

Unfortunately, the holes you see are exit holes where the adults have 
emerged, not entered.  The larvae are located deep within the tree, 
inaccessible to pesticide treatment.
 
Here is a link to more information on this insect pest. 
http://cals.arizona.edu/maricopa/garden/html/t-tips/bugs/carpntr.htm 

Cathy Rymer
Water Conservation Coordinator
Certified Arborist
Master Gardener
City of Chandler
(480) 782-3589
www.chandleraz.gov/water


>>>>>
Brad Stevens
85234
brad.l.stevens at intel.com

Hi, I have carpenter worms in my arizona ash trees and need to know how 
best to eliminate them as they are boring into the crouches of the trees 
and limbs are breaking.
thx
brad
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