Renowned horticulturist Carol Klein embarks on another season by season tour, visiting some of Great Britain's most remarkable gardens. She starts at the intriguing Aberglasney House in Carmarthenshire, Wales with its walled gardens.
Carol visits the garden of one of Britain's most important nurserymen. In 1998, with his wife Lucy, Graham Gough started his own nursery - Marchants Hardy Plants, in East Sussex.
Carol Klein travels to visit the Beth Chatto Gardens near Colchester, Essex. Located in one of the driest spots in England they celebrate creating a space with plants that can best prosper in places similar to their original environments.