Monty Don prunes the deciduous hedges that are key part of the structure and form of Longmeadow. He shows us how to shape and cut as well as share tips on the right tools for the job. He also plants dahlias and cannas in pots for colour that will last from now and into the autumn and will provide a vibrant replacement for the spent lilies. Monty also heads to the capital and gets exclusive access to the second largest garden in London, the US Ambassador's garden where he meets head gardener, Stephen Crisp who has created a wonderful 'country house' style garden in the middle of a bustling city. Carol Klein visits an urban garden with a difference - a bijou NGS garden called Little Eden where the owners have created a small, charming oasis of colour in the heart of a housing estate near Wakefield.