The National Gardens Scheme - in which, once a year, passionate horticulturalists open their gardens to the public - is the focus of a one-hour special. Rachel de
Thame also presents tips and advice on how to make the most of a small garden by planting colourful flowers.
Director David Leighton ; Series editor Gill Tiemey (S) (W) BBC MAGAZINE: Gardeners' World, £2.80. New issue on sale 5 September. Great gardening offers: page 35; Free bulbs and seeds: page