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UK Risk Register Details for Helicobasidium purpureum

This record was last updated on 02/12/2020

Common Names

  • root rot of asparagus
  • violet root rot of apple
  • violet root rot of clover
  • violet root rot of sweet potato

Scenario and Pathways

Scenario for Risk Register

  • show / hide

Pathway Assessed for Entry to UK

  • show / hide

Common Pathways

  • show / hide

Risk Ratings and Current Mitigations

Unmitigated Risks

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

Current Mitigations

  • show / hide

Key mitigation for pest



Industry Scheme

Contingency Plan



Mitigated Risks

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

Proposed Actions

Proposed Actions



Management By Industry

Targeted Survey


Contingency Plan



Distribution and Pest Details


Country / Territory Status Notes
Austria Present
Belgium Present
Bulgaria Present
United Kingdom Present (Widespread)
Denmark Present
France Present
Germany Present
Greece Present
Hungary Present
Ireland Present
Italy Present
Latvia Present
Netherlands Present
Norway Present
Poland Present
Romania Present
Russia Present
Sweden Present
Türkiye Present
Ukraine Present
Bosnia-Herzegovina Unknown Distribution recorded as "Yugoslavia"
Croatia Unknown Distribution recorded as "Yugoslavia"
Kosovo Unknown Distribution recorded as "Yugoslavia"
Republic of North Macedonia Unknown Distribution recorded as "Yugoslavia"
Moldova Unknown Distribution recorded as "Yugoslavia"
Serbia Unknown Distribution recorded as "Yugoslavia"
Slovenia Unknown Distribution recorded as "Yugoslavia"
Czech Republic Unknown Distribution recorded as "Czechoslovakia"
Slovakia Unknown Distribution recorded as "Czechoslovakia"
North America
Canada Present
Mexico Present
United States Present
South America
Argentina Present
Colombia Present
Uruguay Present
Australia Present
New Zealand Present
Algeria Present
Ethiopia Present
Kenya Present
Malawi Present
Morocco Present
South Africa Present
Tanzania Present
Tunisia Present
Zambia Present
Zimbabwe Present
China Present
India Present
Iran Present
Japan Present
Philippines Present
Russia Present
Vietnam Present
Central America
Barbados Present
Dominican Republic Present
Trinidad and Tobago Present

Type of Pest

  • Fungus

Host or Industry at Risk

  • show / hide

Major Hosts

  • Achillea millefolium L.
  • Apium graveolens var. dulce L.
  • Asparagus officinalis L.
  • Aster L.
  • Beta vulgaris L.
  • Brassica rapa L. em. Metzg.
  • Brassica rapa ssp. rapa L.
  • Callistephus chinensis (L.) Nees
  • Capsella bursa-pastoris (L.) Medik.
  • Carthamus tinctorius L.
  • Castanea sativa Mill.
  • Crambe maritima L.
  • Cucurbita pepo L.
  • Cupressus sempervirens var. sempervirens L.
  • Daucus carota subsp. sativus
  • Gerbera jamesonii H.Bolus Ex Hook.F.
  • Lactuca sativa L.
  • Solanum lycopersicum L.
  • Malus pumila Mill.
  • Mercurialis perennis L.
  • Pastinaca sativa L.
  • Pistacia vera L.
  • Solanum tuberosum L.
  • Sonchus L.
  • Stellaria L.
  • Urtica L.

Threats to Protected Cultivation

Forest Tree Pests and Pathogens

Further Information

PRA Availability

PRA not available

Regulation and EPPO listing

  • show / hide

Regulated non quarantine pest (as Helicobasidium brebissonii)

Actions Indicated

  • show / hide


No current Actions Indicated

General Comments

The Risk Register entry for this pest is extremely incomplete and it cannot be compared with other pests on the Risk Register at the current time. As this is a Regulated Non Quarantine Pest (RNQP) listed in the legislation, we are making available the information we have gathered on the pest so far. It is possible that we will add new information to this pest entry in due course, but as there are a great many RNQPs this may take some time.

Risk Records for this Pest