Erwinia sp. “assigned to the E. pyrifoliae taxon” and pathogenic to strawberry is a recently detected pathogen on strawberry. Thus far, it has been found in Belgium and the Netherlands but its origin is unknown. The observations indicate that the potential impact for strawberry fruit production can be high at least under greenhouse conditions in the Netherlands. Greenhouse conditions in the autumn (higher humidity) may be more suitable for disease development than during spring and summer. Basic information on e.g. its host range, mechanisms of survival and spread is currently lacking. Research may clarify its relationship with Erwinia pyrifiolia present in eastern Asia, its host range, the way it survives, spreads etc. and how the disease can be controlled/prevented.