Presenter David Maxwell finds out what it takes to create a world class exhibit at the RHS Chelsea Flower Show. Alongside fern expert Billy Alexander, David helps to create the Kells Bay Garden in the Great Pavillion. He also speaks to some of the other designers, landscapers and tradespeople on site working against the clock as judging day looms large. Despite the challenges of time, heat and even a local fox, the garden gets finished and picks up a prestigious gold medal and the president's award.