Frances Tophill is back at Powderham Castle in Devon. As well as planting up a new herb bed, identifying and collecting seedlings, dividing perennial plants and making a comfrey liquid feed, she explains how to help tackle the decline of butterflies and pollinators in gardens. Carol Klein visits a garden brimming with late summer colour, and Joe Swift meets a young couple who've transformed their urban space into a lush green oasis. There's a visit to an extraordinary haven of peace for people recovering from life-changing surgery, and there's a mother-and-daughter team who create houseplant displays with a difference.