Joe Swift and Rachel de Thame are joined by James Wong to give a guided tour of the world's largest flower show. Hampton Court was Henry VIII's favourite palace; the show gardens echo the anniversary of 500 years since his accession to the throne with a tribute to his six wives. In a cookery special, a signature pizza is created for each of the BBC's main gardening presenters using the showground's many Grow Your Own exhibits, and there's a homage to roses in a special festival at the show's biggest ever Floral Marquee.