Monty Don shows how to prune and train the exuberant summer growth of climbing roses and makes the most of remaining warmth by planting perennials and sowing annuals for next year. Frances Tophill visits a viewer's garden to give advice on how to prune unruly shrubs, while Nick Bailey investigates a new way of combating one of the UK's most invasive weed species. Stourhead in autumn is a horticultural highlight of the year and Alan Power offers a behind-the-scenes tour, while Arit Anderson travels to Yorkshire to find out how scientific research has uncovered the `super-powers' of plants.