Do you have trees with small ‘D’ shaped holes like you see in this photo? This was taken on Crestline where there are quite a few oaks that have thinned and show signs of perhaps becoming firewood very quickly.
Join in on the online Zoom Event this Friday morning:
GSOB Solutions – Lessons Learned – Jan 16, 9AM
Gold Spotted Oak Borer Management
GSOB Solutions: Lessons Learned from Ten Years on the Front Lines
Saving the Most Trees at the Lowest Possible Cost
January 16, 2026 • 9:00-11:00 AM
Hosted by the
Resource Conservation District of Greater San Diego
Online Zoom Event
Registration Required. Simply click here and sign up – free of charge: https://us02web.zoom.us/meeting/register/tX5SGrUpTiqJClcj93evxw
Join UC wildlife biologist Dr. Tom Scott and arborist Bret Hutchinson and USFS Regional Entomologist Stacy Hishinuma as they share practical, hands-on tools and techniques they use to successfully combat the Gold Spotted Oak Borer (GSOB). Their guidance draws on years of field experience leading the Oak Grove GSOB Project and work at other sites throughout San Diego County.
This event follows the recent 10th Annual Oak Grove Community Tree Survey, a critical component of the project’s strategy for managing GSOB infestations. Dr. Scott and Mr. Hutchinson will present the latest inspection findings and outline their action plan for the upcoming spring emergence season.
Their boots-on-the-ground experience with GSOB will benefit landowners, land managers, and community stakeholders who are beginning—or continuing— their efforts to address GSOB. The event provides a forum for learning how to save the greatest number of trees at the lowest possible cost.
Palomar Mountain News 
Leave a comment