Voting in the competition is being held online and the final verdict will be delivered at a ceremony in Brussels on March 17.
Agnieszka Bielawska talks to Jacek Bożek, the founder and head of Gaja Klub, one of the oldest organisations dealing with environmental protection and animal rights in Poland.
Gaja Klub organises a local tree of the year competition, selecting a candidate for the European Tree of the Year contest...