Arit Anderson and Adam Frost introduce this year's RHS Flower Show Tatton Park. With help from the team of garden experts, they bring us the blooming best of the show - all under the theme of 'flower power'. Rachel De Thame sees how the spectacular contemporary floral displays of Fleur de Villes are created. Frances Tophill harnesses the power of trees for our health and well-being. Mark Lane joins the nursery team who have created a completely white garden display. We also meet the first of the designers hoping to win the coveted RHS Young Designer of the Year competition. And never shying away from their own competition, our presenters go head-to-head to create their own ‘presenter’s patch’, to be judged by Carol Klein.