What is Sudden Oak Death?

Sudden Oak Death is a tree disease caused by the plant pathogen Phytophthora ramorum. The disease kills some oak species and has had devastating effects on forests in California and Oregon. Read more about Sudden Oak Death.

Areas of Interest

P. ramorum in Wildlands The information in this section is geared toward land management, forestry and arboriculture professionals, including Best Management Practices.
P. ramorum in Nurseries This section addresses P. ramorum issues critical to nurseries, independent growers, and related plant-care/plant propagation industries, including Nursery Diagnostic Guides.
P. ramorum in the Urban Interface Look here for resources that address common homeowner questions, including diagnosing Sudden Oak Death and finding an arborist to work with.

News

New publication provides the definitive reconstruction of P. ramorum’s history in California.

Updated information on soil solarization treatment for infested nurseries.  Read more…

Nurseries in Oregon and Washington found positive for P. ramorum.  Read more…

SODMAP has been updated for 2013. Plus, a new SODMAP mobile app for iPhones is now available at the Apple store!  Read the full news release…

Read the entire current newsletter.

Watch the videos and slideshows from the Fifth Sudden Oak Death Science Symposium

Help stop the spread of forest pests – including Sudden Oak Death – on firewood! Check out the website of the California Firewood Task Force.

Calendar of Events

6/8 – Los Altos Hills SOD Blitz; Los Altos Hills

6/15 – Sonoma SOD Blitz, Option 1 – Santa Rosa; Environmental Discovery Center

6/15 – Sonoma SOD Blitz, Option 2 – Sonoma Sonoma Community Center

6/15 – Sonoma SOD Blitz, Option 3 – Sebastopol; Veteran’s Memorial Bldg.

See the entire events calendar.