The Holiday Shop at Trumbull High School’s Agriscience and Biotechnology Center, located at 536 Daniels Farm Road in Trumbull, runs through Wednesday, Dec. 18. Hours are weekdays 9-3 p.m.; weekends 10-4 p.m. Sale features wreaths, poinsettias, and other plants. Most items are grown or made by the students. For further information, call 203-452-4200.