Formed in 1890, during the heady days before the 1893 World's Columbian Exposition, the Chicago Horticultural Society boasted members with names deeply rooted in Chicago history: Buckingham, McCormick, and Palmer, among others. Today, as it leads the Garden in a model public-private partnership with the Forest Preserves of Cook County, the Society's horticultural practices have exceeded the vision of its founders. Chicago and Its Botanic...