Plot: The whole Beechgrove team are on the road to the Fair City of Perth. Invited by the 'Beautiful Perth' volunteers, Jim, Carole, George and Brian find out exactly how the city earns that title horticulturally as they visit some of the city's best-kept gardens, including the unique and culturally diverse Moncrieff Allotments that are situated on Moncrieff Island in the middle of the Tay and only accessible by vehicles at low tide