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Phytophthora ramorum/Sudden Oak Death |
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Background
Since the early 1990s, oaks and tanoaks have been dying in the coastal counties of California. Since then, other types of plants have been found to be infected or associated with this disease, referred to as Sudden Oak Death (SOD), ramorum leaf blight or ramorum dieback. Phytophthora ramorum is the pathogen that causes these diseases. Sudden Oak Death was first reported in 1995 in Mill Valley (Marin County) on tanoak. Since that time, the pathogen has been confirmed on various native hosts in fourteen coastal California counties (Marin, Santa Cruz, Sonoma, Napa, San Mateo, Monterey, Santa Clara, Mendocino, Solano, Alameda, Contra Costa, Humboldt, Lake, and San Francisco), and in Curry County, Oregon. Through ongoing surveys, APHIS-PPQ continues to define the extent of the pathogen’s distribution in the US and limit its artificial spread beyond infected areas through quarantine and a public education program.
News and Information
- Phytophthora ramorum: Stopping the Spread (brochure)
- Pest Risk Assessment
- National Pest Alert (PDF; 254 Kb)
- Frequently Asked Questions About the Interim Rule (4/4/07) (PDF; 72 Kb)
- On-Line Resources
Regulatory Updates
- Advance Notification for Shipping P. ramorum Host Nursery Stock
- advance notification information can be sent via email, fax, or postal mail. Please visit http://nationalplantboard.org/laws/index.html to identify the relevant contact information
for each state.
- SPRO Letter with the Federal Domestic Quarantine Order (02/25/11) (PDF; 38Kb)
- Guidance Document (PDF; 891Kb)
- State Contact List (PDF; 106 Kb)
- To add ten new hosts:
- SPRO Letter with the Federal Domestic Quarantine Order and Host List (2/22/10) (PDF; 60 Kb)
Regulations
Program Updates and Reviews
- Program Updates
- National Program Review
- National Quality Assurance Program Review
- APHIS - National Plant Board Phytophthora ramorum Regulatory Working Group Report (PDF; 1.75 Mb)
Protocols
Contact:
Prakash K. Hebbar
National Program Manager
Telephone: 301-734-5717
E-mail: Prakash.Hebbar@aphis.usda.gov
