This project presents available literature on the subject of restorative environments and healing gardens. It proposes design guidelines, based on design qualities and design elements, that can be followed to implement healing gardens in healthcare facilities. It presents two case studies of healing gardens and summarizes the lessons learned from them. Following the design guidelines, a conceptual design proposal for a healing garden at Cooley Dickinson Hospital in Northampton, Massachusetts, is presented, detailing the several elements it offers plant palette of plant material that offers safety, sensorial stimulation, and can be used in zone 5 of the United States.