Seed treated with a pesticide

Seed treated with a plant protection product (PPP) can only be marketed and used if the PPP is authorised for that use.

Northern Ireland (NI)

Provided seed is treated with a PPP that is authorised as a seed treatment for that use in at least one EU Member State it can be imported into NI, marketed and used.

Great Britain (GB)

Up to 31 December 2023, seed treated with a PPP authorised for that use in EU countries may continue to be imported into GB, marketed and used.

From 1 January 2024 only seed treated with a PPP authorised for that purpose in GB may be imported, marketed and used in GB.


Applicants should get any new GB PPP authorisations they need before 1 January 2024. You can find out how to apply in the applicant guide.

When making an application for PPP authorisation you must address the specialised information requirements of the seed treatment risk assessment.

Labels and documents

The label and documents accompanying the treated seed must include:

  • the name of the plant protection product with which the seed was treated
  • the name(s) of the active substance(s) in that product
  • any risk mitigation measures set out in the authorisation for that product where appropriate


The placing on the market and labelling of treated seeds in GB/NI is covered by Articles 49(1) and 49(4) respectively of Regulation (EC)1107/2009. This Regulation forbids prohibiting the placing on the market and use of seeds treated with a plant protection product authorised in another EU Member State.

Regulation (EC)1107/2009 (UK legislation website)

Regulation (EC) 10(1)'s Plant Protection Product Regulations 2011 states that a person must not place on the market or use seeds treated with plant protection products that are NOT authorised for use on such seeds in any EU Member State.

The Plant Protection Products Regulations 2011 (UK legislation website)


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Updated 2023-07-26