Joe Swift and Jo Whiley are joined by gardening experts Carol Klein, Adam Frost, Arit Anderson, Nick Bailey and Toby Buckland at the Royal Horticultural Society's Hampton Court Palace Flower Show 2018. Carol has World Cup fever as she explores plants from across the globe in the Floral Marquee. Toby finds out how to design the perfect family garden, Jo looks at a garden inspired by the topical issue of social media, and Joe talks to a designer whose garden was influenced by a classic children's favourite, the Mr Men books.