Phytophthora ramorum life cycle
gary.maguire
WSU Puyallup
Ornamental Plant Pathology
For Christmas Tree Growers and Forest Managers
gary.maguireFor Christmas Tree Growers and Forest Managers
- A Christmas Tree Grower’s Guide to Phytophthora ramorum (COMTF Nov. 2006)
- P. ramorum Guide for Forest Managers, Christmas Tree Growers, and Forest-Tree Nursery Operators (OSU Extension April 2006)
- Photo gallery of P. ramorum symptoms on conifers (under construction)
Managers, Employees and Volunteers in Public Gardens
gary.maguireBotanical Gardens
Because they are open to the public, botanical gardens are at risk of damage from SOD and other diseases and pests. Find out how you can prevent introduction of these organisms and what to do if they get in:
Guidelines for bio-security
These documents from the UK National Trust have information that will also apply to public gardens in the US and Canada:
Guidance for visitors on how to help us protect the garden from introduced pests and diseases
NT Plant Quarantine and Bio-security Guidance Notes
2a. Handling brought-in plants and quarantine areas – general advice
3. Use of Phytophthora lateral flow devices (LFD)
4. Cleaning footwear and hands
5. Managing gardens to reduce the risk of pests and diseases
Now available:
This poster illustrates best management practices for preventing disease and pest problems in gardens and nurseries. It can be posted in a break room or other common area to educate workers, volunteers, and others. Available in English and Spanish versions.
Download the pdf for printing: English or Spanish
Or contact Marianne Elliott to obtain the print version (24″ x 16.5″)
Many thanks to Ian Wright, The National Trust, for providing the information on this webpage.
National Trust is a UK charity formed over 100 years ago to protect places of Historic Interest or Natural Beauty, for ever for everyone.
It now manages 1 million acres of countryside, 600 miles of Coastline, 240 Buildings of Historic importance and 220 historic gardens and parks (covering 35,600 acres in England, Wales and Northern Ireland. The National Trust is financially supported by membership subscriptions, donations and visitor income.
Over 3.5 million people are members of the National Trust. 12 million people visit our gardens each year. Over 700 plants have been raised, bred or named at our gardens. Our gardens span over 700 years of garden history and plant collecting.
Information for Nursery Professionals
gary.maguireInformation for Nursery Professionals
Introduction
Phytophthora management
Phytophthora can cause substantial problems for nurseries because they are challenging to manage and some species are heavily regulated. Therefore, the aim of this webpage is to provide information and resources to help you keep Phytophthora ramorum and other diseases out of your nursery.
Here you will find information about Best Management Practices and resources produced specifically for managing plant pathogens in nurseries. Note that many of these practices can be applied to control or prevent the establishment of a variety of plant pathogens.
Resources
Brochures
Training modules
- Phytophthora Online Course: Training for Nursery Growers (OSU Professional and Continuing Education)
- Best Management Practices Online Tool (University of California, Agriculture and Natural Resources Nursery and Floriculture Alliance)
Workshops
- Best Management Practices Workshop for Nurseries: Steam Sanitation and Disease Identification – February 2016
General information for nursery production
- Raising and Selling Ornamental Nursery Stock in Washington State by Charles Brun, WSU Extension publication EM102E
Critical Control Point Assessments
Production Visits
Contact us for a Critical Control Point Assessment. We can visit your production and provide recommendations for best management practices suited to your nursery or garden.
Management
Management of P. ramorum in nurseries
There are four Critical Control Points to prevent the entry of waterborne diseases such as Phytophthora and Pythium into your production:
By preventing or managing diseases at these points, you can minimize the damage and loss of product, and grow clean, healthy plants.
More information for managing Phytophthora
- “How to keep P. ramorum out of your nursery” brochure (pdf)
- An Overview of Systems-Based Pest Management for Nursery Production (University of Tennessee PB 1825)
- A Systems Approach for IPM: Critical Control Points (Jennifer Parke, Oregon State University)
- Desinfección de Suelos Y Sustratos Agrícolas (Gobierno Federal de Mexico, 2010)
- Oregon’s Grower Assisted Inspection Program (GAIP)
- Canadian P. ramorum Certification program
Best Management Practices
The below poster illustrates best management practices for preventing disease and pest problems in gardens and nurseries. It can be posted in a break room or other common area to educate workers, volunteers, and others.
We have provided the poster in English and Spanish versions. You can download the pdf for printing or contact Marianne Elliott to obtain the print version (24″ x 16.5″).
Additional Guides
Regulations
Visit our Regulations webpage for summaries of the State and Federal regulations concerning P. ramorum.
Feel free to contact us if you have any other questions or concerns.
WSU Puyallup Research & Extension Center, 2606 West Pioneer, Puyallup, WA, 98371-4998 USA
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General Information
gary.maguireGeneral information
Sudden Oak Death
- Global Invasive Species Database
- USDA-APHIS P. ramorum website
- California Oak Mortality Task Force (COMTF) website – Complete, up to date information about SOD mostly relating to California but including links to other areas
- P. ramorum outbreak on larch in the UK – Get the latest news on the P. ramorum situation in the UK, where the disease has spread to larch and other conifers.
Hosts and identification
- P. ramorum host list from USDA-APHIS
- Symptoms on various hosts (USDA-APHIS)
- P. ramorum IPM guides for the home gardener on HortSense:
- Sudden Oak Death (Common Diseases)
- Do I have P. ramorum? Sample submission guidelines
Phytophthora diseases