The design of residential quarter of Radburn by Clarence Stein and Henry Wright was not merely aimed at separation of pedestrians from Automovieles, but deeply considered systematic development of green tracts. In addition, it was incorporated management and maintenance system of green by residents' organization. The system can be the major reason for successful maintenance of greem tracts since the beginning of the Radburn development. The Radburn Association has been engaged in the management and manintenance activity of green in Radburn. We clarified that their system and activities made maintenance of green environment in the Radburn possible so that the original conditions have been kept since its development. This study report such our findings on the Radburn's system that maintained the green environment.
