Busan Metropolitan City's official Hwamyeong Arboretum program page gives the location as 299 Sanseong-ro, Buk-gu, Busan and lists activities running January through December each year. Participation is free, and the stated application window is 30 to three days before the visit through Busan's integrated booking service.
For weekend family visits, select between the weekend natural-materials workshop (families, listed capacity 15), which involves making things with natural materials, and the weekend forest interpretation program (individuals and families, capacity 20), which tailors nature activities to participants.
For weekday institutional visits, the kindergarten forest interpretation program is for kindergartens and childcare centers (capacity 20), while the group forest interpretation program is for organized groups and institutions (capacity 20). These figures are listed program capacities, not live vacancies. Call 051-362-0276 for inquiries.