Europe's green parties united under a single banner today forming a continent-wide party which they hope will strengthen their showing in June's European elections.
They want "to green Europe", phasing out nuclear energy, promoting renewable energy and campaigning against genetically modified food.
Green politicians currently hold 44 of the 626 European Parliament seats in a loose federation but with their united approach under the slogan "Europe, let's have a party!" they hope to reap bigger gains.
Some 1,300 Greens attended the launch in Rome where leaders of 32 Green parties illuminated one petal each of a huge sunflower - the party's symbol.
The parties came from EU states, from countries set to join the bloc in May and from non-EU European countries like Ukraine.
German Foreign Minister Joschka Fischer, the most prominent Green in Europe, threw his weight behind the newborn party although he will not be a candidate in the June elections.
"We all believe in the principle of one world. And we must be very careful to preserve this one world," he told delegates.
The June elections will be the first held in an enlarged European Union, coming about a month after 10 new countries, mostly east European, swell the bloc to 25.
Yesterday, Europe got its first Green prime minister, when the president of EU entrant Latvia asked former environment minister Indulis Emsis to form a government.