Chelsea Flower Show: Monty Don and Joe Swift look at more of the floral exhibits at this year's event, while ethnobotanist James Wong visits a show garden paying homage to a Victorian invention that revolutionised the way plants were transported. Plus, garden designer Dan Pearson and Thomas Heatherwick, who created the 2012 Olympic cauldron, join Monty to share their thoughts on this year's proceedings.
Alan Titchmarsh, Charlie Dimmock, Laurence Llewelyn-Bowen, Nicki Chapman, Rachel de Thame
Documentary