A new video outlining best practices in monitoring and sampling for invasive shothole borers (ISHB) is now available on the University of California Integrated Pest Management YouTube channel. View it at https://youtu.be/1LKKJe3NgTY

Invasive shothole borers are tiny beetles that pose a major threat to Southern California's urban forests. Managing these pests and preventing their spread requires early identification and ongoing monitoring. This video describes how to monitor for the beetles and how to take and submit tissue and beetle samples for identification. Learn more at www.ishb.org.

This video was produced by the University of California Cooperative Extension and the University of California Statewide Integrated Pest Management Program

Content: Beatriz Nobua-Behrmann, John Kabashima, Curtis Ewing, Albre Brown, Akif Eskalen, Randall Oliver

Narrated by: Cheryl Reynolds

Videographer/Editor: Randall Oliver

Photos: Monica Dimson, Curtis Ewing, Akif Eskalen, John Kabashima, Randall Oliver

As part of the UC Ag Experts Talk series, on May 20 from 3 pm to 4 pm, Dr. Akif Eskalen, Plant Pathology Specialist in UCCE, will host a webinar discussing the shot hole borers attacking avocado trees and their management. Click here to register.

Invasive shot hole borers (ISHB) are a pest and disease complex potentially affecting over 200 tree species, but posing a strong risk to box elders, sycamores, and other riparian and urban trees, as well as being a nuisance pest for avocado. The beetles have also been shown to attack a wide variety of common and less common ornamental species. (For a complete host list, visit https:// ucanr.edu/sites/pshb/overview/SHB_Reproductive_Hosts/). The tiny beetles burrow into the trunks and branches of trees, and create galleries where they cultivate a fungus that utilizes the tree's own circulatory system, harming and in some cases killing the tree. We know the beetle can reproduce in over 60 species of trees, and they have devasted natural riparian areas, though we are beginning to see recovery of some infestations. Currently, the most effective management method is to remove infested wood, sometimes entire trees, and chip what is removed to smaller than 1 inch.

Now there is a new resource for getting up to speed on ISHB, an on-line training!  Available through our website, www.pshb.org, the course is actually served by the eXtension national online learning platform (and users will need to create a free account). The course consists of four chapters, including history and impacts, biology, symptoms and look-alike pests, and monitoring and management. While it can't fully replace field training, it can be a good way to get familiar with the issues.

We're moving north, and holding a training workshop with CalFire ongoldspotted oak borer and invasive shot hole borers May 9th, 2019 in San Luis Obispo! This workshop will address biology, identification, surveillance, and management of infested trees, downed wood. and firewood. We'll cover these topics in the classroom, then have a hands-on lab to learn how to identify signs of shot hole borer damage, set up a monitoring program, and sample trees. 

$30.00 Registration fee includes lunch, a ISHB Field Guide, and ISHB Demonstration Kit. Pre-registration is required. Click here to register.

We have applied for CEU's from the Department of Pesticide Regulation and the International Society for Arboriculture. 

Speakers include Bea Nobua-Behrmann, UCCE Urban Forestry Advisor; John Kabashima, UCCE Environmental Horticulture Advisor (Emeritus); Kim Corella, Forest Pest Specialist, CalFire; and Kevin Turner, Southern California Invasive Pest Coordinator, CalFire

SLO ISHB GSOB Workshop Flyer

Thanks to The Britton Fund, CalFire, and US Forest Service - State and Private Forestry for supporting these workshops.