Don't Need No Mistletoe

There's a mistletoe infestation at Sweet Apple Acres. Applejack doesn't think that's as sweet as it sounds.

Days before Hearth's Warming, Applejack discovers that the most important tree in the orchard has been struck by mistletoe. Just another problem to add to this holiday, really. She's already been more ornery than usual this Hearth's Warming, so what's one more problem to add to the list?

Twilight's not sure why she's so upset, but she'd like to help her not be.