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.
- Report
Submit an online report letting researchers know what you are finding. "Click" below for the Online GSOB Report Form.
- 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
Insect Sampling and Submittal Form
- Be Informed
- Sign up to receive announcements on the most current GSOB information.
- Volunteer
- Sign up to learn about volunteer opportunities to reduce GSOB impacts and restore local oak woodlands.
Although GSOB is a significant problem, a number of other factors can affect the health of California’s oak trees, including stress from recent drought conditions. The links below can help you determine the cause of local Oak decline.
- Oak Tree Management and Pest Resources
- California Oak Disease and Arthropod (CODA) Host Index Database
- Field Guide to Common Pests and Diseases of Oaks in California