This thesis investigates the role of open space planning within the context of a growth management planning philosophy. For contextual framing, the principles of growth management are presented followed by tools and techniques used in preserving open space. The literature review chapter concludes with a look at the development of an open space plan. To bound the scope of this paper, the focus is on open space preserved for passive and active recreation and natural conservation. Montgomery County, Maryland is used as a case example. The qualitative data comes from interviews with planning personnel from the community and park planning departments. As part of the process, the relationship and roles between these two departments regarding open space preservation are explored. This case study helps us to understand what Montgomery County has learned from the past that is influencing the open space preservation for tomorrow. / Master of Landscape Architecture