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BIG NEWS – 8 Species Added to P. ramorum Host List!!!


Domestic quarantine for Phytophthora ramorum 


January 25, 2012 

This Federal Order is issued pursuant to the regulatory authority provided by the Plant Protection Act of June 20, 2000, as amended, Section 412(a), 7 U.S.C. 7712(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 and is likewise issued pursuant to the regulations promulgated under the Plant Protection Act found at 7 CFR §301.92 et seq.

The Administrator of the Animal and Plant Health Inspection Service (APHIS) considers it necessary in order to prevent the spread and dissemination of P. ramorum, to add eight new plant species to the list of associated plant taxa. Additionally, the APHIS administrator has determined it is necessary to move one currently regulated species Cinnamomum camphora from the list of associated plant taxa to the list of proven host plant taxa. The movement of nursery stock of these plant taxa from the States of California, Oregon, and Washington will now be regulated in accordance with this Federal Order and the P. ramorum regulations located at 7 CFR §301.92. Nurseries in the regulated states containing these newly listed plants must operate under a compliance agreement.

The State Regulatory Agencies in the United States, Canadian Food Inspection Agency (CFIA), and the United Kingdom’s Department for Environment, Food, and Rural Affairs, Food and Environment Research Agency (DEFRA /FERA) have identified additional plants associated with P. ramorum that were not previously recorded. Details on these detections are as follows:

Additions to Associated Plant Taxa: 

Ilex cornuta 

• Family: Aquifoliaceae

• Common names: Buford holly, Chinese holly, horned holly

• Symptoms: leaf necrosis

• Notes: Report from USA


Illicium parviflorum 

• Family: Schisandraceae

• Common names: Yellow anise

• Symptoms: leaf necrosis

• Notes: Report from USA


Larix kaempferi 

• Family: Pinaceae (Pine family)

• Common names: Japanese larch

• Symptoms: leaf necrosis, dieback and canker

• Notes: Report from United Kingdom, Ireland


Magnolia denudata 

• Family: Magnoliaceae (magnolia family)

• Common names: lily tree

• Symptoms: leaf necrosis

• Notes: Report from Canada, United Kingdom


Mahonia nervosa 

• Family: Berberidaceae (Mahonia)

• Common names: Creeping Oregon grape

• Symptoms: leaf necrosis

• Notes: Report from USA


Molinadendron sinaloense 

• Family: Hamamelidaceae

• Common names: nil

• Symptoms: leaf necrosis

• Notes: Report from USA


Trachelospermum jasminoides 

• Family: Apocynaceae (milkweed family)

• Common names: Star jasmine, Confederate jasmine

• Symptoms: leaf necrosis

• Notes: Report from USA


Veronica spicata Syn. Pseudolysimachion spicatum 

• Family: Scrophulariaceae

• Common names: Spiked speedwell

• Symptoms: leaf necrosis

• Notes: Report from USA


Moved to the Proven Host Plant Taxa from Associated Host Plant Taxa: 

Cinnamomum camphora 

• Family: Lauraceae

• Common names: Camphor tree

• Symptoms: leaf necrosis, canker

• Notes: Report from USA from Landscape in California


Effective March 1, 2012 any nurseries within the regulated and quarantined areas containing these newly listed associated plants must be properly inspected, sampled and tested in order to be able to move any plants interstate.

————- For more information contact your state Department of Agriculture or your State Nursery Inspector —————–