In this episode, Dee visits a garden that's situated on a group of barges on the River Thames; a pub landlady who's famed for her colourful hanging baskets; two green-fingered neighbours, who've joined forces with their gardens; a couple who use a clarinet choir to draw in visitors; and one of the most spectacular gardens in the handbook. Dee also checks in on Miranda's garden to see if the mission to make her a horticulturalist has succeeded.