In this episode, Charlie Dimmock and the Rich brothers, David and Harry, look back at some of their favourite eco-garden projects - the ones that help Mother Nature. There is a garden that features a highway for rescued hedgehogs in Andover, Arit builds a garden to attract bees, taking her design cues from beehives, and a battered old shed gets the ultimate recycled makeover from the team. There are also plenty of brilliant new gardening tips from Charlie and the boys, including an inventive way to use composters and the best methods to encourage bees into your garden.