The Mayor of Wolverhampton Councillor Sandra Samuels OBE has teamed up with the city's libraries and Boom Writer to stage the competition.
People have until 5 April to write a poem about the environment, entitled We Have One Chance. To sign up, visit 'We Have One Chance' Poetry Competition.
Mayor Councillor Sandra Samuels OBE said: "We know that King Charles is a passionate advocate for the planet and in Wolverhampton we wish to celebrate his coronation with a poetry competition for all ages."
There are 4 categories, under 7s, 7 to 11 years, 12 to 15 years and 16 and over.
Finalists will be invited to perform their poems before a panel of judges who will pick the overall winner for each category.
All finalists will also be invited to a celebratory tea with the mayor and receive a copy of the published anthology.