The nursery has supplied landscape architects Grant Associates, which has designed the 'Forest of Imagination'.
Andrew Congera, sales manager at Wyevale Nurseries, which is based in Hereford, said: "This is the second year we have been involved in this project and helped Grant Associates with its plant and tree needs.
"We have supplied and loaned items including birch trees, clematis, dwarf grasses, Galium odoratum, Ajuga reptens, Carpinus betulus fastigiata, wild garlic and wild strawberries.
The Forest of Imagination is a fantastical landscape and outdoor gallery showcasing a series of artworks and architectural structures and being held from May 15 until 18 Bath's historic Queen Square.
A team of local creative organisations and renowned artists will stage the free, four day, contemporary arts event in the city. The Forest of Imagination features a programme of installations, artworks and activities for all ages.
"We work very closely with Grant Associates and are delighted we could help them again with this arts event," said Congera.
Bath-based creative partners involved include children's charity 5x5x5=creativity, architects Feilden Clegg Bradley Studios, design studio Ideas of the Mind, Herman Miller Cares, Bath Illuminate, Carpenter Oak, Bath Spa University and The House of Fairy Tales.Artists and designers already signed up to the event include Edwina Bridgeman, Jono Burgess, Jessica Palmer, John East, and students from Bath Spa University.