This is an annual festival to pray for the perfect health and safety of people who enjoy parks and gardening, while savoring the beauty of the fresh greenery. It is packed with activities to get familiar with greenery and trees, such as a green and flower flea market, an art & craft experience and making parquetry-style coasters using wood scraps, an experience riding in an 'aerial work platform (kōsho sagyōsha)' which is active in maintaining trees around the city, and nature games to play with nature.