For more information You can help stop Contact the Oregon State University Extension forester who serves your the spread county, or contact an Oregon or federal An infected rhodo- dendron. Note the forester. People can spread Phytophthora ramorum across dead flower bud and long distances by moving infected plants the blackened leaf OSU Extension, Curry County either purchased at a nursery or collected stems just below it. 29390 Ellensburg (Hwy 101) STOP in the wild, or by moving infected wood, Gold Beach, OR 97444 leaves, stems, or soil. 541-247-6672 or 1-800-356-3986 the spread of Before leaving infested areas: http://extension.oregonstate.edu/curry/ If you live, work, recreate, or travel in the quar- • Clean and disinfect equipment (saws, Oregon Department of Forestry antined portion of Curry County, Oregon shovels, pruning equipment, etc.) you http://egov.oregon.gov/ODF/ (see map, over): have used in infested areas. Sudden • Wash soil off tires, wheel wells, and the • Become familiar with the most recent USDA Forest Service, undercarriage of your vehicle. Pacific Northwest Region regulations related to Sudden Oak http://www.fs.fed.us/r6/nr/fid/ Oak Death Death (see websites, in “For more • Clean soil off shoes, mountain bikes, information”). horses’ hooves, and pets’ paws. Oregon Department of Agriculture • DO NOT collect and remove host plants • For best protection, use a 10-percent http://egov.oregon.gov/ODA/PLANT/ or plant parts from the forest (see http:// bleach solution for cleaning. path_sod_index.shtml www.aphis.usda.gov/plant_health/plant_ pest_info/pram/index.shtml). Buy healthy plants from reputable Informational websites about SOD: • DO NOT collect or remove soil. nurseries. OSU Extension Service http://extension.oregonstate.edu/ • Stay on established trails, and If you travel or work in any of emergency/oak_death.php respect any trail closures. the 14 quarantined counties in coastal California (see map, California Oak Mortality Task Force over), follow these same rules. http://nature.berkeley.edu/comtf/ Don’t bring Phytophthora USDA Agricultural and Plant Health ramorum into Oregon! Inspection Service (APHIS) A dead http://www.aphis.usda.gov/plant_health/ A serious disease tanoak. Help protect plant_pest_info/pram/regulations.shtml threatens Oregon’s forests Oregon forests and its nursery industry. and plant nurseries Here’s how you can help — and the people Bleeding trunk on to protect these key resources. an infected tanoak. who depend on them! EC 1608-E • Revised November 2009 Where is Sudden Oak Death? Important points to know ABOUT Sudden Oak Death

Tanoak killed by Sudden Oak Death.

Sudden Oak Death is the common name for a State and federal inspectors survey forests and disease caused by Phytophthora ramorum, nurseries in Oregon regularly to detect the dis- a previously unknown and presumably non- ease. Infected plants and adjacent host plants native pathogen. At this time, no one knows are destroyed; areas affected are monitored where the pathogen came from or how it was until the pathogen is no longer present. introduced into Oregon. State and federal quarantine regulations are in place Phytophthora ramorum has killed more than 1 mil- to minimize the risk of new infections and lion oak and tanoak trees in 14 coastal coun- prevent human-assisted spread. Complete texts ties in California and several hundred tanoaks of these regulations (ORS 603-052-1230 and in Curry County, Oregon. It also causes branch 7 CFR 301.92) are on the Oregon Department and shoot dieback and leaf spotting on a large of Agriculture and the U.S. Department of number of woodland and nursery plant species. Agriculture websites (see over).

The pathogen has a wide host range including tanoak, California black oak, Douglas-fir, Tanoak infection (left) grand fir, coast redwood, Pacific madrone, is revealed in the Pacific rhododendron, evergreen huckle- inner bark, where dark California and Oregon counties cankers indicate areas with documented cases of Sudden berry, and many other tree and shrub species killed by P. ramorum. Area in Curry County, Oregon, under state and federal quarantine Oak Death, as of June 2007. common in Oregon and Washington forests. regulation for Sudden Oak Death, as of October 2009. Hosts in the nursery trade include varieties of rhododendron, camellia, and Pieris. A complete, current host list is at http://www. aphis.usda.gov/plant_health/plant_pest_info/ pram/index.shtml

P. ramorum spreads naturally when clouds and rain move spores within forest canopies—from © 2009 Oregon State University. This publication may be photocopied or reprinted in its entirety for noncommercial purposes. treetops to stems and shrubs below, or across Produced and distributed in furtherance of the Acts of Congress of May 8 and June 30, 1914. Extension work is a cooperative landscapes from treetop to treetop. Artificial program of Oregon State University, the U.S. Department of Agriculture, and Oregon counties. Oregon State University Extension (human-assisted) spread occurs when people Service offers educational programs, activities, and materials without discrimination based on age, color, disability, gender identity Infected Douglas-fir or expression, marital status, national origin, race, religion, sex, sexual orientation, or veteran’s status. Oregon State University transport infected plants or plant parts or branch tip (above) and Extension Service is an Equal Opportunity Employer. infested soil. The pathogen survives in infested an infected huckleberry branch (left). EC 1608-E • Published June 2007. Revised November 2009. plant material, litter, soil, and water.