Overview: James Wong is convinced we should all be growing lilies in our gardens. He unearths the history of the lily, meets expert lily growers as they prepare for one of the country's biggest flower shows at Tatton Park and gets intimate with the insect associated with the decline of lily growing in the UK. Christine Walkden thinks woodland plants have been left in the shade in favour of sun loving, bigger, blousier flowers. She shows the people of Brentwood that the only way isn't Essex, as she converts them to the joys of bluebells.