Arit Anderson and Frances Tophill introduce a special Gardeners' World from Wakehurst, Kew's wild botanic garden in Sussex. They not only explore the gardens but also meet the gardeners, joining in on their planting projects and finding out more about the UK's largest conservation project, the Millennium Seed Bank.

There's also a houseplant enthusiast whose passion for monstera has taken over most of the rooms in his flat in Cheltenham, and in London, we visit the garden of a designer who has made the most of the limited space in his outdoor courtyard - but who still finds room for the odd weed or two. And in Cornwall, we discover a gardener with a unique approach to planting meadows by combining edible and ornamental plants.

As midsummer approaches, it's the perfect time for Monty to place succulents outside at Longmeadow, as well as planting out dahlias and tender vegetables.

Carol Klein visits Trebah Garden in Cornwall, where she finds plants which can add early summer pazazz to our borders. Nick Bailey is at RHS Wisley to look at a variety of shrubs that can be used as alternatives to traditional box hedging.

We travel to the seaside in Kent to meet a group of gardeners who have transformed an unloved public space, and in Wales, we find a garden packed with unusual and prehistoric plants.