He just won't stop gardening! Oh, we know, his gardening is a metaphor. Cool story, bro. But the title begs audiences to imagine the non-figurative version, and it's a doozy.
Picture a house full of scared sorority sisters, peeking through their blinds to spy the constant gardener, the strange man who's forever lurking by their well-manicured shrubs with large shears. One of them drunkenly screams out her window one night, "Do you ever stop gardening!" She shouldn't have done that. The next day, they notice that he's gone from his usual post among the azaleas and marigolds. That's because when the sun sets, he's going to start gardening them!
Roll credits on Eli Roth movie. Which is nothing like the tepid guilt of this supposed spy thriller.