Gardening Australia celebrates its 25th birthday with a very special episode. All the presenters come together at Ripponlea Estate in Melbourne to share their experiences and memories of the program while we delve into the rich Gardening Australia archives to showcase the sweep of the show over 25 years. Organics: Costa, Josh and Jerry talk about the show's backbone. Beautiful Gardens: Clarence, Sophie and John talk about what it means to visit people's homes. Peter Cundall: Peter talks about his experiences on the programme. Philosophy: Jane, John and Jerry talk about the functions of Gardening Australia. Practicality: Sophie, Tino and Angus discuss the show’s commitment to giving good advice. Autumn Jobs: Josh gets stuck into some timely autumn maintenance.