The purpose of this study is to clarify actual situations of "open garden" activity from the perspectives of how participants start and how long they engage in the activity, and to examine the activity's continuity. As a result of questionnaire surveys conducted at 55 "open garden" activity sites, it was revealed that: (1) The longer the period a group of flower enthusiasts is involved in the activity, the more actively they engage in activities for exchange and information gathering as a regular hobby; (2) If the activity is encouraged by administration, the shorter the period of activity, the more administrative support is received to increase the number of visitors and participants as an activity for a limited time; and (3) While cooperative activities between administration and participants are increasing, the role administration plays in the continuation of the activity is becoming increasingly important.
