Official Pest Report

Official Pest Reports are provided by National Plant Protection Organizations within the NAPPO region. These Pest Reports are intended to comply with the International Plant Protection Convention's Standard on Pest Reporting, endorsed by the Interim Commission on Phytosanitary Measures in March 2002.

Phytophthora ramorum, Sudden Oak Death (SOD), Expansion of Listed Hosts–California and Oregon

Country: United States

Title: Phytophthora ramorum, Sudden Oak Death (SOD), Expansion of Listed Hosts–California and Oregon

Jonathan M. Jones


National Phytophthora ramorum Program Manager
USDA-APHIS-PPQ Invasive Species and Pest Management
4700 River Rd. Unit 134 Suite 4C33
Riverdale, MD 20737
Tel: 301-734-8247 Fax: 301-734-8584

On February 14, 2002, the USDA’s Animal Plant Health Inspection Service published an interim rule (7 CFR 301.92) in the Federal Register for Sudden Oak Death (SOD). This rule regulates the artificial spread of this disease-causing organism from moving out of the counties where the disease is established. It is now known that certain plant parts of an additional host require regulating in order to control the artificial spread of the disease. 

University researchers regularly analyze suspect new hosts. In December 2002, a researcher announced the disease has been found associated with parts of a tree species growing in the currently regulated areas. This new host is canyon live oak (Quercus chrysolepis). The disease was reported limited to small branches and leaves. 

Therefore, effective immediately the restricted articles are small branches (less than 1 inch in diameter) and leaves of canyon live oak. This action is authorized by the Plant Protection Act of June 20, 2002, Section 412(a), which authorizes the Secretary of Agriculture to prohibit or restrict the movement in interstate commerce of any plant, plant part, or article if the Secretary determines the prohibition or restriction is necessary to prevent the dissemination of a plant pest within the United States. This action is also authorized by 7 CFR 301.92-2(b)(2) which designates as restricted articles any other product or article that an inspector determines to present a risk of spreading SOD. This designation is only valid when an inspector notifies the person in possession of the product or article that it is a restricted article. 

This action will be reflected by regulatory changes that will be published in the Federal Register for public comment in accordance with the provisions of the Administrative Procedures Act. 

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Posted Date: Jan. 31, 2003, 9 a.m.