Spooky ArBOOretum Garden Tour at Morris Arboretum

Get into the spirit of the season with knowledgeable guides on a tour of trees and plants that may include “Little Devil” ninebark, witches’ brooms, pumpkin fullmoon maples and more. 100 E. Northwestern Ave., Philadelphia. Mon–Fri, 10:30; Sat & Sun, 1 pm. Garden adm., $10–$20. MorrisArboretum.org.