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UK Risk Register Details for Phytophthora cactorum

This record was last updated on 30/12/2020

Common Names

  • Collar rot of apple
  • Crown rot of apple
  • Dieback of rhododendron
  • Fruit rot of loquat
  • Rhizome rot of strawberry

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
United Kingdom Present (Widespread)
Bulgaria Present
Croatia Present
Czech Republic Present
Denmark Present
Finland Present
France Present
Germany Present
Greece Present
Hungary Present
Ireland Present
Italy Present
Lithuania Present
Netherlands Present
Norway Present
Poland Present
Romania Present
Russia Present
Serbia Present
Slovenia Present
Spain Present
Sweden Present
Switzerland Present
Turkey Present
North America
Canada Present
Mexico Present
United States Present
South America
Argentina Present
Brazil Present
Chile Present
Colombia Present
Peru Present
Uruguay Present
Venezuela Present
Australia Present
New Zealand Present
Egypt Present
Kenya Present
Morocco Present
Senegal Present
South Africa Present
Tunisia Present
Zimbabwe Present
China Present
Georgia Present
India Present
Indonesia Present
Iran Present
Israel Present
Japan Present
Laos Present
Lebanon Present
Malaysia Present
Myanmar Present
North Korea Present
Pakistan Present
Philippines Present
South Korea Present
Taiwan Present
Vietnam Present
Central America
Bermuda Present
Cuba Present
El Salvador Present
Trinidad and Tobago Present

Type of Pest

  • Fungus

Host or Industry at Risk

  • show / hide

Major Hosts

  • Acer L.
  • Banksia L.
  • Betula L.
  • Carya illinoinensis K.Koch
  • Cereus Mill.
  • Citrullus lanatus (Thunb.) Matsum. & Nakai
  • Cornus L.
  • Cucumis L.
  • Cydonia oblonga Mill.
  • Eriobotrya japonica (Thunb.) Lindl.
  • Fagus L.
  • Fragaria L.
  • Fragaria ananassa (F. x ananassa) Duch.
  • Hibiscus L.
  • Juglans regia L.
  • Lilium L.
  • Maclura pomifera (Rafin.) Schneid.
  • Malus Mill.
  • Malus domestica Borkhausen
  • Mespilus germanica L.
  • Panax quinquefolius L.
  • Pelargonium L'Herit. Ex Ait.
  • Persea americana Mill.
  • Picea A.Dietr.
  • Pinus L.
  • Prunus armeniaca L.
  • Prunus avium ssp./var. avium L.
  • Prunus cerasus L.
  • Prunus domestica ssp. domestica L.
  • Prunus dulcis (Mill.) D.A.Webb
  • Prunus persica Batsch
  • Prunus salicina Lindl.
  • Pyrus L.
  • Rhododendron L.
  • Ribes uva-crispa Linnaeus
  • Solanum L.
  • Syringa vulgaris L.
  • Theobroma cacao L.
  • Viola L.
  • Citrus
  • Rheum x hybridum Murray

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

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