| Clue | Source | Date |
|---|---|---|
| Plant borders in area outside Number Ten this regularly | ||
| In a common spelling, a low-growing evergreen perennial, often used in rockeries | The Times Specialist Sunday | 24 Mar 2024 |
| Trailing purple-flowered plant, much grown in rock-gardens | The Telegraph General Knowledge | 01 Jun 2020 |
| A number beat rival regularly making a bloomer |