UK Risk Register Details for Chrysanthemum stunt viroid

Common Names

  • Measles of chrysanthemum
  • Stunt of chrysanthemum

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] 3
Spread [1 - 5] 1
Impact [1 - 5] 2
Value at Risk [1 - 5] 3
Likelihood x Impact [1 - 25] 6
UK Relative Risk Rating [1 - 125] 18

Current Mitigations

  • show / hide

Key mitigation for pest

Regulated non quarantine pest



Industry Scheme

Contingency Plan



Mitigated Risks

Likelihood [1 - 5] 2
Spread [1 - 5] 1
Impact [1 - 5] 2
Value at Risk [1 - 5] 3
Likelihood x Impact [1 - 25] 4
UK Relative Risk Rating [1 - 125] 12

Proposed Actions

Proposed Actions



Management By Industry

Targeted Survey


Contingency Plan



Distribution and Pest Details


Country Status Notes
Belgium Present
Czech Republic Present
Germany Present
United Kingdom Present (Limited)
Italy Present
Netherlands Present
Norway Present
Poland Present
Russia Present
Sweden Present
Slovenia Present
Turkey Present
North America
Canada Present
United States Present
South America
Brazil Present
Colombia Present
Australia Present
New Zealand Present
Egypt Present
South Africa Present
China Present
India Present
Japan Present
South Korea Present
Taiwan Present

Type of Pest

  • Virus or Viroid

Host or Industry at Risk

  • show / hide


Major Hosts

  • Chrysanthemum x morifolium Ramat.

Threats to Protected Cultivation

  • Both protected crops and outdoor production

Forest Tree Pests and Pathogens

Further Information

PRA Availability

PRA not available

Regulation and EPPO listing

  • show / hide

Regulated non quarantine pest, EPPO A2

Actions Indicated

  • show / hide


Statutory action against findings on commercially traded plants.

General Comments

A viroid that can cause impacts on chrysanthemum, with a limited distribution in the UK. Spread of the pest is largely through infected plant material. Now a regulated non quarantine pest.

Risk Records for this Pest