This story took a while and a lot of thinking to finally get it right, but I think the result turned out nicely. The original prompt was provided by Cytotoxin, who has helped me out on one or two of my stories before.

One morning, Applejack comes to Twilight`s library, utterly distraught. For some unfathomable reason, there is a pear tree right in the middle of her prized apple orchard. Apparently, it was always there, but Applejack never realized that. Twilight and Pinkie Pie investigate the mystery of a pear among Apples.