Last summer I gathered seed from a plant that was supposed to be Moonflower. Planted in my new sunny bed, it was the only plant that the rabbits did not devour during the drought in July. No wonder! It is the poisonous Jimson Weed, recognized because Georgia O’Keefe painted them and one is on the cover of one of my books. The flowers open around dusk and are closed by the time the sun hits them the next day. Not even 24 hours. The scent is astonishing.