Monty Don gives advice on how to cut and maintain hedges as well as giving ideas on growing fruit in pots. Carol Klein chooses varieties of late-flowering clematis as her plant of the month, Nick Bailey travels to the southern tip of Cornwall to seek out a plant which escaped from our gardens and is now threatening rare and native plants, and Adam Frost uncovers the secrets of successful planting combinations in an Oxfordshire garden. Mark Lane joins the enthusiasts who have lovingly restored a walled garden in Warwick as they open their gates to the public for the first time, and we visit a garden in Yorkshire where foliage and not flowers are of paramount importance.