UK Risk Register Details for Phytophthora austrocedri

This record was last updated on 08/01/2021

Scenario and Pathways

Scenario for Risk Register

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  • Pest spreads to maximum extent

Pathway Assessed for Entry to UK

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Common Pathways

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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] 4
Spread [1 - 5] 3
Impact [1 - 5] 4
Value at Risk [1 - 5] 3
Likelihood x Impact [1 - 25] 16
UK Relative Risk Rating [1 - 125] 48

Current Mitigations

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Key mitigation for pest

Regulated non quarantine pest (Great Britain)



Industry Scheme

Contingency Plan



Mitigated Risks

Likelihood [1 - 5] 3
Spread [1 - 5] 3
Impact [1 - 5] 4
Value at Risk [1 - 5] 3
Likelihood x Impact [1 - 25] 12
UK Relative Risk Rating [1 - 125] 36

Proposed Actions

Proposed Actions



Management By Industry

Targeted Survey


Contingency Plan



Distribution and Pest Details


Country / Territory Status Notes
United Kingdom Present (Limited)
South America
Argentina Present
Iran Present

Type of Pest

  • Oomycete

Host or Industry at Risk

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Juniperus communis

Major Hosts

  • Chamaecyparis lawsoniana (Murr.) Parl.
  • Chamaecyparis nootkatensis (D.Don) Sudw./(Lamb.) Spach
  • Cupressus sempervirens var. sempervirens L.
  • Juniperus communis ssp. communis L.
  • Libocedrus chilensis (D.Don) Endl.

Threats to Protected Cultivation

Forest Tree Pests and Pathogens

  • Coniferous

Further Information

PRA Availability

UK (2012, 2015)

Regulation and EPPO listing

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Regulated non quarantine pest (Great Britain)

Actions Indicated

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Statutory action on nursery plants for movement. Work in collaboration with relevant organisations on a strategy to prevent spread via nurseries and to protect rare juniper habitats.

General Comments

Significant threat to juniper and need to work with stakeholder and statutory conservation bodies to mitigate risk and protect unaffected areas where possible. Given establishment in some areas of the wider environment, statutory action will be limited to findings on nursery plants for movement.

Risk Records for this Pest