Saint John Horticultural Association History The Saint John Horticultural Association was formed in May of 1893. A leading group of citizens formed the association so they could design a Public Gardens and over see Rockwood Park. They began to secure other properties near the Park with the purpose of keeping it wild. Today Rockwood Park encompasses almost 2200 acres. The Saint John Horticultural Association still manages the Public Garden and greenhouses on Seely Street along with Rockwood Park Campground. We have a board of directors that oversee our operations in the Park and help make decisions on future development. (Click on any thumbnail below to see a slideshow of larger views. Mouseover the left and right edges of the images to get Next and Previous buttons.)