The following map images show oak tree evaluation results through June, 2017.
You may also download a pdf image of the full map.
Each dot represents an oak tree. Color legend:
Red = High Risk
Orange = Lower Risk
Green = Healthy
Yellow = Problem Tree
Purple w/ Black Outline = Removal Candidate
Click images to enlarge.
Help Save Our Oak Trees
GSOB has been confirmed in Del Dios & Mt Israel
If you love our community oak trees, please come to an expert panel presentation. GSOB, Golden Spotted Oak Borer, has now reached Escondido. This is the beetle devastating the oaks in Julian and much of East County. Since its discovery in 2008, GSOB is responsible for the death of over 100,000 oak trees in San Diego County, with the number growing every day.
What can we do to save our trees? Education, early detection and response is key to managing the health of the oak trees. Come hear the best available science and management practices from state level experts:
In researching GSOB, there are many opinions about what can and cannot be done. Some say nothing can be done – just let the trees die and contain the wood on site to prevent the further spread of GSOB. Others suggest using good horticulture, chemical sprays, tree injections and even herbal teas. This leaflet link is the most current and definitive source on GSOB:
https://www.fs.usda.gov/Internet/FSE_DOCUMENTS/stelprd3833276.pdf
Further information and a Hands On work shop with professional arborist will happen later in June.
See our GSOB Information & Updates page for more information.
Stacy McCline
President and Founder
Del Dios Habitat Protection League
GSOB has now been found in Del Dios Park, on Laurel, Kalmia, and Juniper Lanes. It is also on Mount Israel near Detwieler Road. We can assume in the next several years our large Coast Live Oak trees will see GSOB. The adult beetles emerge from mid-May through August, so presence of the beetle in healthy trees may not be detectable yet.
Residents and the City of San Diego are being urged by the Del Dios Habitat Protection League to protect high value oaks from this deadly invasive beetle. We are putting together a community plan to treat trees together to reduce the individual tree cost.
We are asking for people who are interested in being part of the solution to step up and contact Stacy McCline stacy@DDHPL.org right away.
The gold spotted oak borer is a tiny beetle causing huge damage in Southern California. It infests the region's towering oak species - coast live oak and canyon live oak - and can kill a centuries-old tree in just a year or two.
