| Clue | Source | Date |
|---|---|---|
| Blue, spiky coastal plant a" the main plant for Christmas decoration? (3, 5) | ||
| Eryngium maritimum or ... (3,5) | ||
| The main decoration at Christmas? (3-5) | ||
| Spiny-leaved plant of sandy shores | The Telegraph General Knowledge | 26 Nov 2018 |
| European coastal plant once thought to be an aphrodisiac |