New legislation to address the plant health threat posed by Xylella


The Government has today (16 February) announced plans to address the plant health threat posed by Xylella, a key step for setting plant health legislation tailored to risks in Great Britain.

A new Statutory Instrument will come into force next month to introduce stricter measures against Xylella fastidiosa (“Xylella”) – a bacterium which causes disease in a wide range of woody commercially grown plants such as grapevine, citrus, olive and several species of broadleaf trees widely grown in the Great Britain, as well as many shrubs and herbaceous plants.

The new changes have been identified as priorities for improving our plant biosecurity in response to known threats, protecting businesses, society and the environment in the short term, as well as in the future.

New requirements will apply to those countries where Xylella is known to be present and will include:

  • Only allow imports of Polygala and Coffea from countries where Xylella is known not to occur.
  • More stringent requirements for the import of Olive, Almond, Lavender, Rosemary and Nerium oleander from countries where Xylella is known to occur.
  • Allow imports under certain conditions including inspections of the place of production and the surrounding area, testing, pre-export inspections and a one-year quarantine period prior to import.

The existing requirements for high-risk plants from countries where Xylella is not known to occur will be retained, which include annual official inspection, with sampling and testing of the plants concerned.

Biosecurity minister Lord Gardiner of Kimble said:

We take the nation’s biosecurity very seriously. That is why we are increasing restrictions and requirements for the import of high-risk Xylella host plants to reduce the chances that Xylella is introduced into Great Britain.

These measures will enhance the level of protection against this devastating disease and are necessary to protect our country.

Chief Plant Health Officer Nicola Spence said:

Xylella is not currently in Great Britain and it is essential that all of us with an interest in a healthy, thriving plant and horticulture industry do all we can to keep it that way and protect our environment and businesses.

To keep our country protected, it is vital that all plant importers and traders welcome these new measures and continue to make careful decisions on sourcing plants, particularly those from countries where Xylella is present.

Xylella is continuing to spread in Europe with outbreaks of the disease occurring in Italy, France, Spain, Germany and Portugal.

The pathogen is not known to be present in Great Britain, but the possibility remains of Xylella arriving on high-risk hosts, such as olive, and those plant species commonly associated with outbreaks in the EU. The long latency period of Xylella means that, without additional requirements, it could be carried into non-infected countries via imports of plants, long before the infection is identified.

These new measures will cover Great Britain. Following a consultation process with the Plant Health Advisory Forum and individual businesses, the new measures give a high level of assurance that imports are from areas where Xylella is not present, while also providing the desired level of protection for plants imported from countries and areas where Xylella is present.

New legislation is due to come into force on 4 March 2021. A copy of the regulations is available here.


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