Monty Don demonstrates how to harvest and store potatoes, and also adds late summer colour to the cottage garden and prunes shrub roses. He is also joined at Longmeadow by renowned plantswoman Helen Dillon. Carol Klein travels to Norfolk to meet a member of a horticultural dynasty, Adam Frost takes a close look at the design of an outstanding small garden in Oxford, and Frances Tophill meets a man in Scotland who is passionate about potatoes. Plus, Joe Swift and Flo Headlam pay a visit to Potterne in Wiltshire to check on the progress of the community garden. Including Weather.