Warnings have been issued to householders not to plant seeds which are being posted to Irish addresses, seemingly at random.
The Department of Agriculture is concerned the seeds could be an invasive species.
The department has been contacted by "concerned members of the public" who have received unsolicited small packets of seeds from outside the EU in recent days.
"So far, the indications are that all the seed packets received in this manner originated in China," the department said.
"It appears that this situation is similar to that happening in other countries, such as the USA and Canada."
The department added that they are investigating the matter and, to date, only a small number of seed deliveries have been reported in Ireland.
UPDATE— Dept of Agriculture, Food and the Marine (@agriculture_ie) August 6, 2020
We are carrying out an investigation after several members of the public reported receiving unsolicited small packets of seed from outside of the EU in the post.
Initial reports show that most were sent from China, and our labs are working to identify the seeds received. pic.twitter.com/9LYpWHEY6K
"Although these seeds are yet to be identified, the main concern would be the potential introduction of invasive species or harmful diseases that could cause environmental or economic damage," a department spokesperson said.
The department is also asking anyone who has received the random seeds not to plant them, and to contact them via email on firstname.lastname@example.org or by telephone on (01) 505 8885.
Last week, UK news outlets reported that similar seed packages were being delivered in the UK, although the package label said the items inside were stud earrings.
A United States Department of Agriculture official, Osama El-Lissy of the Plant Protection program, said that the seeds may be part of a "brushing scam", where online sellers send people items they did not order, in order to generate a transaction to support positive fake reviews of their profile.