Before you visit Historic St. Mary’s City this fall, pack a pumpkin for the pigs. Present your squash at the Visitor Center and receive $1 off one admission to the museum. The plantation pigs love these big orange fall fruits, which often end up in the trash after serving ornamental purposes.  Retired jack-o’-lanterns are most welcome.  The carved grins and grimaces amuse the staff and the pigs, Rosemary, Maizie, Pumpkin, and Scarlet. Visit the Plantation at 2:30 p.m. and share the pigs’ delight as they consume delectable donations.  One pumpkin per person, per visit please, through the 2009 season.