Events dealing with flowers and greenery are held mainly in parks and green spaces, and are carried out in a variety of ways and on a variety of scales, from the National Urban Greenery Fair (hereinafter referred to as the Urban Greenery Fair) held at the national level to events held at the local city level. This study focuses on Gunma Prefecture's " Gunma Making of Flower and Green" a policy that focuses on flower and greenery events. First, we summarize the outline of the " Gunma Making of Flower and Green" and how the flower and greenery events have been implemented in each municipality in Gunma Prefecture. Next, we focus on the relationship between flower and greenery events and regional cooperation and analyze its e results of the " Gunma Making of Flower and Green" project will be evaluated through an interview survey. The results will be summarized and the future of flower and greenery events will be discussed.