Both the PRA and the PRA report are available. 

Expert working group 2006-02, review in 2006. This PRA supported the addition of the pest to the EPPO A1 List in 2006. 

The probability of entry is considered as medium mainly because the importation of the main hosts is assumed to be limited. 

The probability of establishment is high (host plants are cultivated in the PRA area, some parts of the PRA area have very favourable climatic conditions, nursery production practices are favourable to the pathogen). 

Economic importance would be high in particular for nurseries. Economic impacts would mainly arise from losses of host plants on specialist nurseries (but there is few data available on the importance of specialised nurseries in the EPPO region apart from UK). Environmental impacts are thought likely to be low because the main hosts are not key components of natural ecosystems in the PRA area .

2021: The PRA documents were modified to clarify the phytosanitary measures recommended