There are a lot of best parts of this, but perhaps the #1 best part is that nothing whatsoever actually changes and the plants stop rampaging just as inexplicably as they began. Also, "punched in the face by a sunflower."

This reminds me I should put up a post about The Ice Limit, which I am pleased to see still has the wrong blurb on Amazon. I hope no one buys it thinking they're getting a tender coming-out story, because they will not.