UCCE Humboldt - Del Norte Counties
University of California
UCCE Humboldt - Del Norte Counties

Sudden Oak Death

Information on sudden oak death UC Cooperative Extension provides information about sudden oak death and disease symptoms caused by the pathogen Phytophthora ramorum. We also monitor for the presence of this pathogen in Mendocino, Humboldt, and Del Norte counties (and frequently the western edge of Trinity) and are currently working on slowing the spread of the pathogen in forested settings. The following links and downloads present some of the information we've found most relevant to sudden oak death management and monitoring in the North Coast. For more information about P. ramorum in general, as well as information about how it is affecting other California counties, visit the California Oak Mortality Task Force website at www.suddenoakdeath.org. You can also obtain more information from Yana Valachovic, Humboldt-Del Norte Forest Advisor, or from Dan Stark, North Coast Sudden Oak Death Program Coordinator.

CLICK the bleeding tanoak above for more information on sudden oak death and symptoms of Phytophthora ramorum
CLICK the bleeding tanoak above for more information on sudden oak death and symptoms of Phytophthora ramorum

CLICK the above map for information on disease locations in the North Coast
CLICK the above map for information on disease locations in the North Coast

A Brief Introduction to Finding Sudden Oak Death Symptoms on Tanoak and California Bay Laurel
SOD Symptoms on Tanoak and CA Bay Laurel (PDF)

General information on oaks and oak health and tanoak
Oak Tree Health in the North Coast (PDF)

A Field Guide to Insect and Pathogens of California Oaks

Information about Sudden Oak Death and Wildfires
Sudden Oak Death and Fire in California (PDF)
Safety issues for firefighters in SOD-infested forests (PDF)

Guides
A series of downloadable guides (PDFs) produced by the California Oak Mortality Task Force for a variety of user groups.

Informational brochure on SOD
SOD guide for homeowners
SOD guide for homeowners (condensed)
A guide for recreational users
SOD Guidelines for California Landscapers & Gardeners
SOD guidelines for arborists
SOD guide for arborists (in Spanish)
SOD guidelines for forestry
A Christmas tree grower's guide to SOD
A guide for collecting in forests
SOD guide for collecting forest products (in Spanish)
A guide for plant gatherers
Phytophthora ramorum Forest Products Regulations

Webmaster Email: lacannafax@ucanr.edu