In this week's gardening programme, presenter David Maxwell tours the transformed gardens at Hillsborough Castle ahead of the public opening. The new garden manager Claire Woods and her predecessor Stephen Martelli show David the restored four-acre walled garden and the lost garden. Averil Milligan also joins David for the tour providing practical gardening tips on route. Also in the programme, David catches up with Fergus Garrett, head gardener at the world renowned Great Dixter.