Dumfries and Galloway. Travelling the globe, often putting their lives at risk, a number of Scottish adventurers brought back exotic plants to the UK that are now taken for granted. Chris Beardshaw helps farmers in southern Scotland celebrate their heritage by transforming a garden using specimens made available by those intrepid plant hunters. Director Paul Tucker ; Series producer Gill Tiemey BBC BOOKS: The Natural Gardener, based on the series The Flying Gardener, L20, available from www.bbcshop.com