Sudden Oak Death (SOD), a serious exotic disease, is threatening the survival of tanoak and several oak species in coastal forests of California, between Del Norte and Monterey Counties. The disease spreads during wet years on leaves of California bay laurels and tanoaks.

SOD blitzes are community events for anyone to go out into nature and look at California bay laurel trees for symptoms of this tree disease. Your collections will be displayed on the SOD BLITZ website. Become a local citizen scientists and search for these symptoms in San Luis Obispo County along the beautiful creeks and parks we have.