How Does Your Garden Grow?

Poirot makes an appearance at the Chelsea Flower Show, where has a new rose named after him. There, he is approached by Miss Amelia Barrowby and given an empty packet of seeds. Puzzled and curious, Poirot decides to visit Miss Barrowby when he learns that she has written to for help. However, when Poirot and Miss Lemon goes to visit Miss Barrowby, they learn that she died the previous night. Poirot is approached by Catherine Reiger, Miss Barrowby's companion, with a cryptic statement. Whatever can this mean? Poirot investigates the circumstances surrounding Miss Barrowby's death with royally enlightening results.