While there were cherry trees growing along the Negawa River before the development of the Negawa Green Tract in the southern part of Tachikawa City, the strength of these cherry trees was in decline. This project aims to develop citizen groups that will proactively implement activities through the formulation of a cherry tree conservation plans and conservation activities, etc. Specifically, a green workshop approach will be employed to encourage proactive activities by citizens groups. This is an approach that focuses on participation, hands-on experience, and cooperation by providing programs related to greening and interchange to participants, improving the awareness of participants towards activities, and ultimately encouraging citizens themselves to devise and plan activities. Through these activities, we hope to complete cherry tree conservation plans and form communities.