The number of advertisements for declared plants detected on an e-commerce platform over a 12-month period. These detections were made from a sample of 5,000 advertisements that had been matched to search terms for declared plants (i.e., targeted sample) A the number of prohibited declared plant advertisements detected within the jurisdiction (i.e., prohibited in that jurisdiction, refer Fig. 2). The colour refers to the percentage of advertisements that were prohibited B the total number of declared plant advertisements detected in that jurisdiction that are declared anywhere in Australia. The colour refers to the percentage of advertisements that contained declared plants C the 2020 resident population (Population) and number of plant taxa declared in each jurisdiction (Plants declared). Population data was sourced from Australian Bureau of Statistics (2020).