Monty starts to tidy up the garden for autumn and reviews this year's display in the jewel garden. Carol Klein looks at the Apiaceae family, which includes not only stalwart and wildlife-friendly plants but also edible roots, and we pay a visit to a giant vegetable grower who is hoping to break the world record with his carrots. Adam Frost's designs begin taking shape when he starts to build raised beds for his contemporary kitchen garden, while Nick Bailey travels to a suburban garden in Windsor to tackle overgrown climbers and shrubs. Jane Moore discovers an exuberant garden and gardener whose small space is packed with plants, and Nick Macer discovers a garden in Ireland where the climate resembles an Atlantic rainforest.