In October 2016, the European Parliament and the Council adopted Regulation (EU) 2016/2031 on protective measures against plant pests (“Plant Health Law”). On 13 December 2016, the Regulation entered into force and will be applicable from 14 December 2019. The new rules aim to modernise the plant health regime, enhancing more effective measures for the protection of the Union's territory and its plants. The Plant Health Law increases the prevention against the introduction of new pests via imports from third countries. Commission Implementing Regulation (EU) 2018/2019 establishes the list of high risk plants the introduction of which into the EU territory will be provisionally prohibited from 14 December 2019 until a full risk assessment has been carried out. Published in the Official Journal on 11 October 2019, the Commission Delegated Regulation (EU) 2019/1702 lists 20 quarantine pests as priority pests, including Xylella fastidiosa, the Japanese beetle, the Asian long-horned beetle, Citrus greening and Citrus Black Spot, whose economic, environmental and social impact on EU territory is the most severe.