Monty gives his top tips for filling gaps in the summer borders, with an array of plants to extend the season and take the garden into the autumn and beyond. He demonstrates how to prune a species rose, takes leaf cuttings from his succulent plants and sows turnips to harvest by the end of the summer. He also checks up on his sweetcorn and cuts back summer-fruiting raspberries. Rachel de Thame explores a garden in Devon which has been transformed from a pig farm into a colourful paradise. Frances Tophill discovers the surprising medicinal and homeopathic properties of some of Britain's favourite garden plants. There's a gardener in Somerset who has turned his hand to creating quirky garden structures made from salvaged wood. And a self-confessed orchid obsessive shows off the thousands of plants in his impressive collection.