ForesTree - Detail Information

Pest and Disease Information

* CA Oak Mortality Task Force Aerial
* UFEI images Douglas-Fir
* UFEI images Tanoak Affected Trees:
California Laurel, Douglas-Fir, Bigleaf Maple, California Black Oak, Canyon Live Oak, Coast Live Oak, California Buckeye, Madrone and Tanoak.

* Complete Image Citations:
- Image #1: CA Oak Mortality Task Force
- Image #2: UFEI images, www.ufei.org
- Image #3: UFEI images, www.ufei.org

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Phytophthora ramorum
Sudden Oak Death

 

Description of Disease

Phytophthora ramorum causes two types of symptoms on affected plants. In some it causes bleeding cankers on the mainstem with red-brown exudate. Zone lines are present around diseased tissue when bark is examined. If the tree is killed by the canker, the leaves suddenly turn brown and remain attached to the tree. Mortality. On other hosts the disease affects the leaves and branch tips. Necrotic leaf tips or leaf spots and twig dieback may occur. The leaf spots generally form where water collects and remains for extended periods on the leaves.

Information on this Disease

pdf A Field Guide to Insects and Diseases of California Oaks

pdf Sudden Oak Death, by David M Rizzo and Matteo Garbelotto

pdf Sudden Oak Death, Guidelines for Forestry -California Oak Mortality Task Force

pdf Sudden Oak Death, Outlooks on Pest Management

pdf Sudden Oak Death, USDA Pest Alert

pdf Sudden Oak Death: Host plants, by David Rizzo

 yellow arrow California Oak Mortality Task Force

 yellow arrow Forest Phytopthoras.org

 yellow arrow Sudden Oak Death

pdfCalifornia Forest Insect and Disease Training Manual

General Information and Contacts

 yellow arrow CA Agricultural Commissioners

 yellow arrow CA Cooperative Extensions

 yellow arrow Cal Fire - California Forest Improvement Program (CFIP)

 yellow arrow Cal Fire - Contact an Urban Forestry Advisor

 yellow arrow Cal Fire - Forestry Assistance

 yellow arrow Cal Fire - Pest Management

 yellow arrow Cal Fire - Vegetation Management

 yellow arrow California Department of Food and Agriculture

 yellow arrow California National Forests - Offices

 yellow arrow California ReLEAF

 yellow arrow California Urban Forests Council - Regional Councils

 yellow arrow Fire Safe Council - Find a Local Council

 yellow arrow Forest Health and Protection

 yellow arrow Forest Pest Conditions Pacific Southwest Region

 yellow arrow Southern California Mountain Area Safety Taskforce

General Grant Resources

yellow arrow California Oak Mortality Task Force - grants

yellow arrow California ReLEAF Grants

yellow arrow Fire Safe Council Grants Clearing House

yellow arrow Fuels Reduction Program

yellow arrow Grants.gov


*No warranties or guarantees as to the accuracy of the data and information derived from this web site are expressed or implied. The California Polytechnic State University and the Cal Poly Foundation shall not be responsible for any loss of profit, indirect, incidental, special, or consequential damages arising out of the use of the data and information derived from this web site.