| 1 | | | Blarney Castle |
| 2 | | | Brook Hall |
| 3 | | | Derreen |
| 4 | | | Dromana House |
| 5 | | | Fernhill Park and Gardens |
| 6 | | | Fota Arboretum |
| 7 | | | Howth Castle |
| 8 | | | Ilnacullin |
| 9 | | | JFK Arboretum |
| 10 | | | Mount Congreve |
| 11 | | | Mount Stewart |
| 12 | | | Mount Usher |
| 13 | | | National Botanic Gardens Kilmacurragh |
| 14 | | | Powerscourt |
| 15 | | | Rowallane Gardens |
| 16 | | | Seaforde Gardens |
| 17 | | | Tourin |
| 18 | | | Tullynally Castle |
