Invasive Shot Hole Borers
Invasive Shot Hole Borers
Invasive Shot Hole Borers
University of California
Invasive Shot Hole Borers

Diagnosis & Management

Do You Have ISHB on Your Property?

This online assessment is intended to help detect the presence of ISHB (Polyphagous and Kuroshio Shot-Hole Borers) on your property. Consider potential safety hazards, tree value (economic and ecological), available resources, and other factors unique to each situation when using this tool. Simply click the link below for access.

ISHB Detection Assessment

Diagnosis and Management

Ongoing research is currently pursuing treatment options for ISHB and Fusarium Dieback. Accurate identification of symptoms, containment of the current infestation, and preventative measures are also key to slowing the spread of the beetle.




Common signs and symptoms of ISHB - see examples of attack on dozens of host trees

Lookalike Pests

Learn about other common pests on ISHB host trees, and how to tell them apart from ISHB


Options for managing a ISHB/FD infestation

Wood Disposal

How to handle infested trees or branches once they have been removed



Help us keep ISHB from spreading to uninfested areas

Commercial Avocado

Resources for commercial avocado growers



This site contains research-based information for education purposes. For specific guidance check with your local land management regulatory authorities. Any information on products and practices is for educational purposes only and does not constitute an endorsement or recommendation by the University of California.

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