Biosecurity Queensland has seized more than 300 illegal potted cacti, which could have caused serious environmental problems if allowed to spread, in the past year.

Minister for Agricultural Industry Mark Furner says the 315 plants were being sold by internet traders or nurseries in south east Queensland.

Mr Furner says Australia doesn’t have any native cacti, but with so many dry areas our landscape is the ideal environment for them to thrive and there are now cacti infestations in all states and territories of Australia, which is having serious impacts on agriculture and the environment.