A Longwood Gardens Christmas is an annual holiday celebration at Longwood Gardens in Kennett Square, Pennsylvania, that transforms the conservatory and outdoor grounds with seasonal horticultural displays and festive illumination. The program pairs themed floral exhibits—often featuring poinsettias and conservatory installations—with music and fountain performances, evening light shows, and family-oriented programming. The event is notable as a major regional holiday attraction that highlights Longwood’s horticultural design and nighttime spectacle.