In 1941, the bacterium was described for the first time. It does not yet occur in Germany and neither is listed in the Annexes of Directive 2000/29/EC nor at the EPPO. Curtobacterium flaccumfaciens pv. poinsettiae infests Poinsettias (Euphorbia pulcherrima). Due to unsuitable climate conditions for the host plants it can be assumed that C. flaccumfaciens pv. poinsettiae would not be able to establish outdoors in Germany. However, an establishment in Southern European MS cannot be excluded (e.g. Canary Islands). In contrast, a high damage potential for the culture in protected cultivation is probable in case of an introduction into the nursery via latently infested young plants. Due to its high damage potential for Poinsettias the bacterium represents a phytosanitary risk for the cultivation of Poinsettia in Germany and other EU-Member States. Based on this risk analysis it can be assumed that the pest is able to cause considerable damage in Germany or another Member State. Hence, measures on the control and prevention of the introduction and further spread of this potential quarantine pest should be taken according to § 4a of the German Plant Inspection Order (PBVO). The infested plants should be destroyed and comprehensive cleaning and disinfection measures of contaminated surfaces, equipment etc. should be carried out.