UK Risk Register Details for Gymnosporangium asiaticum

Common Names

  • Japanese pear rust
  • Leaf rust of Japanese pear
  • Leaf rust of juniper
  • Pear juniper leaf rust
  • Pear juniper rust

Scenario and Pathways

Scenario for Risk Register

  • show / hide
  • Pest is introduced

Pathway Assessed for Entry to UK

  • show / hide
  • Plants for planting (except seeds bulbs and tubers)

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] 3
Spread [1 - 5] 2
Impact [1 - 5] 2
Value at Risk [1 - 5] 2
Likelihood x Impact [1 - 25] 6
UK Relative Risk Rating [1 - 125] 12

Current Mitigations

  • show / hide

Key mitigation for pest

EU regulated pest



Industry Scheme

Contingency Plan



Mitigated Risks

Likelihood [1 - 5] 1
Spread [1 - 5] 2
Impact [1 - 5] 2
Value at Risk [1 - 5] 2
Likelihood x Impact [1 - 25] 2
UK Relative Risk Rating [1 - 125] 4

Proposed Actions

Proposed Actions



Management By Industry

Targeted Survey


Contingency Plan



Distribution and Pest Details


Country Status Notes
United Kingdom Absent
Russia See Notes Russia (Far East)
North America Present
United States Present
Asia Present
China Present
Japan Present
South Korea Present
Taiwan Present

Type of Pest

  • Fungus

Host or Industry at Risk

  • show / hide

Pyrus pyrifolia, Juniperus

Major Hosts

  • Juniperus L.
  • Pyrus pyrifolia (Burm.F.) Nakai

Threats to Protected Cultivation

Forest Tree Pests and Pathogens

  • Coniferous

Further Information

PRA Availability

UK (2014)

EU and EPPO Listing

EC IAI, Commission Decisions 2002/887/EC and 2002/449/EC, EPPO A2

Actions Indicated

  • show / hide


Statutory action to be taken against findings

General Comments

A pest mainly of pear and juniper, present in Asia, North America and Eastern Russia. A derogation which allows imports for bonsai creates some risk. However, the regulations currently in place and post-entry quarantine effectively mitigate the risk to the UK.

Risk Records for this Pest