Monty Don and Joe Swift take a look at how the RHS Chelsea Flower is helping to reimagine urban living, with innovative ideas that can be replicated at home. Rachel de Thame shares the secrets to creating a private retreat in even the smallest of spaces, whilst Carol Klein unveils the new plants that are set to become must-haves in garden borders. Nick Bailey reveals the planting choices to help deal with another scorching summer. And interior design master Michelle Ogundehin describes how to create a green haven indoors.