Sudden Oak Death Through Time:
Confirmations of Sudden Oak Death
(Phytophthora ramorum) in California 2000-2007
Updated January 2007

NOTE: Dates shown are dates of first confirmation of P. ramorum. The disease might have existed in the area prior to the date indicated.
Additional SOD confirmations each quarter does not necessarily imply spread of SOD. This map does not depict nursery confirmations.