Hero Image

What You Can Do

Under a cooperative program, the US Forest Service, CAL FIRE, and agency officials are working together to determine the distribution, impact and possible prevention methods of tree mortality caused by Goldspotted Oak Borer (GSOB). Research includes understanding the lifecycle of GSOB, local infestation levels, tree health and susceptibility and the current distribution of oaks affected in San Diego.

Local citizen awareness can help determine the distribution and movement of GSOB in the county.


If you see symptoms of GSOB on oak trees on your property or in your neighborhood, you are encouraged to submit an online report letting researchers know what you are finding. Follow the link below for the Online GSOB Symptoms Report Form.

Online GSOB Symptoms Report Form


Sticky Trap Line
Set and Monitor 'Sticky' Traps

You may collect an insect specimen from trees on your property and submit the sample to the Entomologists at the County of San Diego Agriculture, Weights and Measures Department for verification of GSOB.

Insect Sampling/Trapping and Submittal Guidelines (PDF)

Insect Sampling and Submittal Form (PDF)


Be part of the first line of defense against Goldspotted Oak Borer. The Early Warning System (EWS) is a program of volunteers who monitor and report oak tree health conditions to research specialists. Volunteers are asked to survey oaks in locations convenient for them, near their home or work. See the Early Warning System (EWS) webpage to learn more and sign-up or contact the EWS Program Coordinator.

Stay Informed

The Goldspotted Oak Borer (GSOB) steering committee sends out a monthly newsletter containing information and announcements related to research projects and findings; workshops and events; and new programs or materials. If you are interested in receiving GSOB information and announcements, subscribe to the e-mail mailing list.

Workshops on the goldspotted oak borer were offered throughout southern California in the Spring of 2011. Presenters for these workshops were coordinated through a growing cadre of specialists and scientists, who have research and work experience with goldspotted oak borer and related oak woodland issues.

We will also be providing toolkits through the Resources page with downloadable management, outreach and media materials in the near future. So keep an eye out!