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General Rationale

Rationale: Mandatory treatment of potpourri

Effective 2 October 2019 to 24 February 2021

Potpourri is a mixture of dried plant material used for decoration or scent. Ingredients of potpourri may include unidentified or restricted plant material, seeds and pods.


All consignments of potpourri are subject to mandatory treatment with:

  1. ethylene oxide at 1500g/m³ for 24 hours at 21°C, or

  2. ethylene oxide at 1200g/m³ for 5 hours at 50°C under initial vacuum of 50kpa, or

  3. gamma irradiation at 25kGray.