Alan Titchmarsh focuses on the relationship between people and plants - can gardens that claim to aid relaxation help stressed-out football manager Ian Holloway ? Plus, a report from South Africa, one of the most bio-diverse countries in the world, and the winner of Britain's Favourite Flower. Visit www.bbc.co.uk/chelsea for detailed photography, audio and video, a video diary, podcasts and a competition, plus details of how to vote for your favourite flower and show garden
Digital viewers can watch three extra streams via the red button, including a tour of four show gardens, Carol Klein 's encounters with exhibitors and another chance to see tonight's programme