Monty travels to two of the youngest gardening cultures in the world. But it's not just about dreamy climates and wonderful plants. Monty sets out from the aptly named Botany Bay to uncover a story of culture clash and invasion, where the gentle habits of the indigenous people and the extraordinary natural landscapes have been dashed aside in favour of imported plants and a very 'English' garden style. In New Zealand, he sets off in search of the wild heart of the country, where he revels in a magical rainforest garden created entirely of native plants.

Gardens:

8. Australia - The Royal Botanic Gardens, Sydney

9. Australia - Kennerton Green, Mittagong, New South Wales

10. Australia - The Sitta Garden, Sydney

11. Australia - Alice Springs Desert Park, The Northern Territories

12. Australia - Cruden farm, Langwarrin, Melbourne

13. Australia - The Garden Vineyard, Moorooduc, Melbourne

14. New Zealand - Ayrlies Garden, Auckland

15. New Zealand - Te Kainga Marire , New Plymouth