UK Risk Register Details for Phytophthora ramorum

Common Names

  • Ramorum leaf blight
  • Ramorum shoot dieback
  • Rhododendron twig blight
  • Sudden oak death

Scenario and Pathways

Scenario for Risk Register

  • show / hide
  • Pest spreads to maximum extent

Pathway Assessed for Entry to UK

  • show / hide

Common Pathways

  • show / hide
This section is currently being developed as part of the next phase of the Risk Register.

Risk Ratings and Current Mitigations

Unmitigated Risks

Likelihood [1 - 5] 5
Spread [1 - 5] 4
Impact [1 - 5] 5
Value at Risk [1 - 5] 5
Likelihood x Impact [1 - 25] 25
UK Relative Risk Rating [1 - 125] 125

Current Mitigations

  • show / hide

Key mitigation for pest

EU emergency measures and UK suppression project

Regulation

Surveillance

Industry Scheme

Contingency Plan

Awareness

Research

Mitigated Risks

Likelihood [1 - 5] 4
Spread [1 - 5] 4
Impact [1 - 5] 4
Value at Risk [1 - 5] 5
Likelihood x Impact [1 - 25] 16
UK Relative Risk Rating [1 - 125] 80

Proposed Actions

Proposed Actions

Regulation

Deregulation

Management By Industry

Targeted Survey

PRA

Contingency Plan

Publicity

Research

Distribution and Pest Details

Distribution

Country Status Notes
Europe Present
Belgium Present
Switzerland Present
Czech Republic Present under eradication
Germany Present
Denmark Present
Spain Present
Finland Present
France Present
United Kingdom Present (Limited)
Greece Present
Croatia Present
Ireland Present
Lithuania Present
Netherlands Present
Norway Present
Poland Present
Serbia Present
Sweden Present
Slovenia Present
North America Present
Canada Present (Limited)
United States Present (Limited)

Type of Pest

  • Oomycete

Host or Industry at Risk

  • show / hide

Forestry, Broadleaved trees

Major Hosts

  • Acer pseudoplatanus L.
  • Aesculus hippocastanum L.
  • Castanea sativa Mill.
  • Larix Mill.
  • Larix kaempferi (Lamb.) Carriere
  • Lithocarpus densiflorus (Hook. & Arn.) Rehd.
  • Quercus L.
  • Rhododendron L.
  • Rhododendron ponticum L.
  • Umbellularia californica (Hook. & Arn.) Nutt.
  • Vaccinium myrtillus L.
  • Vaccinium ovatum Pursh
  • Viburnum L.
  • Fagus sylvatica L.

Threats to Protected Cultivation

Forest Tree Pests and Pathogens

  • Broadleaved & Coniferous

Further Information

PRA Availability

EU (2009)

EU and EPPO Listing

Commission Decision 2002/757/EC, EPPO A2

Actions Indicated

  • show / hide

Action

Statutory action against findings.

General Comments

Pathogen of larch and other hosts subject to EU emergency legislation. A containment strategy is in place in the UK, reflecting its presence in wider environment/forestry settings in some areas. EU regulatory status is under review.

Risk Records for this Pest