The plantswoman and broadcaster visits more outstanding gardens across the UK and meets the people who look after them, beginning at Arundel Castle in West Sussex. Joining head gardener Martin Duncan and his team, Carol helps to pollinate the peach trees, takes a lesson in posy-making and highlights some of the most interesting and beautiful plant specimens there.

Carol visits Bressingham Gardens in Norfolk, home of the Bloom dynasty of Norfolk horticulturists who introduced British gardeners to a wealth of plants and devised a revolutionary way to display them. Carol spends time with Adrian Bloom, whose ethos is to introduce the very best examples of plants that will grace even a tiny garden.