Welcome to English in a Minute! This is your thumb. But what could it possibly mean if you have a green thumb? A: Dan, thanks for taking care of my office plant while I was away. D: Oh, about that? I might have overwatered it. Or underwatered it. Anna: Well, I haven’t been to my desk yet. But I’m sure it’s fine. Dan: Well, actually… A: You killed it! D: Hey, I never claimed to have a green thumb. If you have a “green thumb,” you have a special ability to make plants grow and keep them healthy. In Dan’s case, he seems to be especially good at killing plants. And that’s English in a Minute!