No Magnus the plant does not have to be named to enter an exhibition, but if the plant is chosen for table judging and there are more than one plant of the same species or cross only then they are given names.
Quote Originally Posted by Magnus A View Post
And in Europe I think you have to give a plant a clone name to enter an exibition. The vendors thereby get clone name on all their exibition plants. And as the same plant can be awarded several times by different society a plant can have several Europeen awards... Plants can even be handed in and be awarded at the same show but in different years (in Europe).

Though I have only seen the AOS award mentioned when plants are sold, not the Europeen awards.