Arnold Hooper's giant plant Sesame Street : Season 13 Episode 113

Mr. Hooper prepares for a visit from his brother, Arnold. He arrives moments later and calls attention to Mr. Hooper's small plant, which he'd noticed on his last visit. As a gift for "Heschy," Arnold gives him a six-foot plant, which is pushed into the store by Biff and Sully. "You think it's big now? Wait 'till it starts growing," says Arnold.