Theatreworks USA will present James and Deborah Howe’s hopping (and hilarious) horror story “Bunnicula” at 1 and 3 p.m. Saturday at BlackRock Center for the Arts, 12901 Town Commons Drive, Germantown. Geared toward children ages 5 and older, the adaptation follows stoic cat Chester and loveable mutt Harold, whose lives are turned upside down when the arrival of a new pet rabbit at the Monroe household coincides with all vegetables being drained of their color. Lock up your lettuce! Protect your parsley! Tickets are $14. For more information, call 240 -912-1058. Visit www.blackrockcenter.org.