Monty Don and Joe Swift host the first of two visits to the RHS Flower Show, Tatton Park in Cheshire, with Carol Klein, Toby Buckland and Arit Anderson. The team explore the diverse range of show gardens including the ingenious designs for the compact 'back to backs'. Carol celebrates the late summer flowering displays in the floral marquee and shares her guide to getting the best out of your hydrangeas. Monty hails horticulture's next generation of planters and landscapers and Joe quizzes champion growers for the secrets to producing perfect summer fruit and veg.