36th annual event features plants, antiques, music, food, history, and more By Kathleen Brady Shea, Managing Editor,  The Times Downingtown horticulturalist David L. Culp will add his expertise to the plant sale at the 36th Annual Downingtown Friends Fall Festival. When an urban high school principal thanked a longtime Longwood Gardens educator for a class that fostered empowerment to “change the...