Sudden Oak Death on the Santa Lucia Preserve

A volunteer pins a sudden oak death (SOD) sampling tag to a tree. April 4, 2022 By Dr. Brian Woodward, Conservation Ecologist Sudden Oak Death (SOD) is a tree disease caused by the exotic plant pathogen Phytophthora ramorum. Originally introduced with imported nursery plants, the pathogen has spread widely across coastal California and southwestern Oregon, where it has killed hundreds [...]