In this special episode, Rachel de Thame and Arit Anderson explore the role gardeners can play in having a positive impact on wildlife in their gardens, allotments and communal green spaces. Nick Bailey meets an entomologist on a mission to change our perceptions of common garden pests, Kate Bradbury shows how she gardens in harmony with wildlife on her allotment, and there's a look at a city garden where the wildlife is flourishing. We also meet a gardener in Kent who wants to have as many creatures on her plot as possible, and viewers share the joy that wildlife brings to their gardens.