As the garden reaches its peak of summer perfection, Monty Don gives advice on how to prune summer flowering shrubs, maintain the floral display and plans for autumn flowers. He also makes a return visit to Dublin to find out how world-renowned plantswoman Helen Dillon is progressing in her new garden.

Joe Swift shows how good design should not hinder challenging conditions when he visits a garden in Kent, Rachel de Thame explores the vital role of scent in wild flowers and the insects that visit them, and we find out about the work of one extraordinary dahlia enthusiast. Nick Bailey has designs on a weekend project which will transform a front garden into a beautiful and practical space, and we meet a passionate gardener who has filled her small Cumbrian garden with 40 different varieties of wisteria. Show less