2025 ISHB-FD Symposium
2025 Invasive Shothole Borers – Fusarium Dieback Symposium
September 23, 2025
In-person or Online (via Zoom)
Register here: surveys.ucanr.edu/survey.cfm?surveynumber=46775
About the Symposium
Designed for land managers, arborists, and other professionals whose work includes tree health and/or pest management (as well as anyone seeking an in-depth understanding of the pest-disease complex), the 2025 ISHB–FD Symposium will help you to:
- Identify the presence of ISHB–FD and consider best management approaches
- Learn about the Greater shothole borer (Euwallacea interjectus) and the new challenges it may present for California
- Understand the new ISHB–FD threat map and how to use it
- Explore promising research aimed at managing ISHB–FD
Event Details
8:00 am – 12:30 pm
Oak Knoll Village Clubhouse
28192 O'Neill Drive, Ladera Ranch, CA 92694 (In-person attendance capped at 70)
Zoom attendance available (details provided after registration)
2025 ISHB-FD Symposium Agenda (Click here for PDF of symposium agenda)
September 23 at the Oak Knoll Village Clubhouse in Ladera Ranch and Online via Zoom
* Parking at Oak Knoll Village Clubhouse is limited. In-person attendees should park at Cox Sports Park and shuttle to the clubhouse.
8:00 Welcome and Introduction – Randall Oliver, Statewide ISHB Communications Coordinator, UC Integrated Pest Management Program
8:10 Overview of pest-disease complex including biology and hosts – John Kabashima, Environmental Horticulture Advisor, Emeritus, UC Cooperative Extension
8:30 Greater shothole borer– Shannon Lynch, Assistant Professor of Plant Pathology, UC Davis
9:00 Current distribution and threat map – Shannon Lynch, Assistant Professor of Plant Pathology, UC Davis
9:30 Break
9:40 Management – Best practices – Beatriz Nobua-Behrmann, Urban Forestry and Natural Resources Advisor, UC Cooperative Extension
10:25 Putting BMPs into action – Kelly Parkins, Plant Health Care Coordinator at West Coast Arborists, Inc.
11:05 Break
11:15 California State Parks case study – Noa Rishe, Acting Senior Environmental Scientist, California State Parks
11:45 Hope for the Future – Endophytes and Biocontrol – Shannon Lynch, Assistant Professor of Plant Pathology, UC Davis; Akif Eskalen, Professor of Cooperative Extension in Plant Pathology, UC Davis; Paul Rugman-Jones, Associate Project Scientist, Entomology Department, UC Riverside
12:30 End of Symposium
12:30 – 1:45 pm
Oak Knoll Village Clubhouse
Lunch for in-person attendees
* Lunch will be provided to in-person attendees, after which those attending the optional field exercise will walk back to Cox Sports Park. If you are an in-person attendee, please indicate any dietary restrictions on the registration form.
Registration Fees
Continuing Education Units (CEUs)
4 CEUs approved from:
- California Department of Pesticide Regulation (DPR)
- International Society of Arboriculture (ISA)
Online attendees requesting CEUs must complete a post-event exam.
Optional Field Exercise
1:30 – 3:00 pm
Cox Sports Park, Ladera Ranch
With guidance from leading experts, practice identifying and evaluating ISHB–FD infestations and damage.
No CEUs are associated with this portion of the symposium. If symposium attendees indicate sufficient interest (question on registration page), a similar exercise will be scheduled in Northern California (San Jose) at a future date.
Location
Oak Knoll Village Clubhouse (or online via Zoom)
28192 O'Neill Drive
Ladera Ranch, CA 92694