Monty welcomes a special guest, the Duchess of Cornwall, to Longmeadow, where she shares her love of gardening.

Also in this programme, Monty carries out some seasonal maintenance on the mound, demonstrates how to plant a fragrant lavender hedge and catches up on the progress of his aubergines and chillies in the greenhouse.

Nick Bailey visits Knoll Gardens in Dorset and gives his tips on the tall perennials which give a burst of colour in borders towards the end of the season, when other flowers have started to fade. JJ Chalmers heads to the Royal Botanic Garden Edinburgh and discovers the vital role it plays in the local community. And we get plenty of inspiration and tips from our viewers' own gardens.

Monty is at Longmeadow with plenty of seasonal advice to keep us busy and our gardens colourful.

Will Young shows us around his south London courtyard garden and reveals why it has become an absolute joy in his life, and Joe Swift helps him create some seasonal pot displays for sunny and shady spots.

We also visit an inspirational garden in Essex filled with beautiful summer flowers, and its owner explains why it has become increasingly important for her health and wellbeing. And we get plenty of ideas and tips from our viewers' own gardens.