The possibility of spreading the pathogen in clove growing is assessed as low due to the controlled growing conditions. Imported propagating material comes from places, where D. dianthicola was officially not found. There may be occasional infiltrations of the pathogen this way, but these will be a single cases. The higher risk is related to import of other decorative plants and potatoes. The uncertainty associated with the assessment of pathogen penetration scale with plant material is moderate due to the lack of official reports on the number of intercepts by this pathway.

The possibility of spreading in field crops is assessed as low due to the lack of reports on apperance of infected plants, with high uncertainty related to no literature data available. In greenhouse cultures the probability of pathogen spreading is defined as low, with low uncertainty.