I'm not sure how this happened. I just went to farm in the Crystal Coast area and saw that I already had a plot active but this is what the plot looks like:
I can farm more than two plots at once so I tried raking another plot and the game let me. I was not able to use another plot though since the bugged plot is also under my character's name. Raking, using compost, and using a scarecrow seems to work fine on the bugged plot. After I plant my seeds and water them though, my crops will automatically die.