| title | ISBN-13 | year of publication |
|---|---|---|
| Trees and Shrubs: Hardy in the British Isles | 978-0-7195-4443-9 | 1988 |
| Trees and Shrubs Hardy in the British Isles Vol 1 A-C: A-C v. 1 | 978-0-7195-1790-7 | 1989 |
| Trees and Shrubs Hardy in the British Isles Vol 2 D-M: D-M v. 2 | 978-0-7195-2256-7 | 1973 |
| Trees and Shrubs Hardy in the British Isles Vol 3: N-Rh: N-Rh v. 3 | 978-0-7195-2427-1 | 1976 |
| Trees and Shrubs Hardy in the British Isles Vol 4 Ri-Z: Ri-Z v. 4 | 978-0-7195-2428-8 | 1989 |