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.

Adam Frost adds tall plants for shady conditions to his borders, shows how to make a window box for growing vegetables and herbs and gives tips on how to grow plants successfully in peat-free compost. Nick Bailey visits Kew Gardens to explore their collection of ferns and cameras return to the urban garden of Kate Bradbury to find out how she ensures that visiting wildlife is kept well fed throughout the summer months. Plus, the Isle of Man garden where a range of exotic plants are thriving in the microclimate on the island and a nurseryman in Kent with a passion for hydrangeas.