From its Persian roots to the present day, Joe Swift looks at how the walled garden has changed and how practical features can be adapted in gardens today. Plus the restoration of Tatton Park's kitchen garden back to its Edwardian heyday. Gardeners' World returns with another special on 29 July.
Producer Nicky Taylor ; Series producer Sarah Moors BBC GARDENERS' WORLD MAGAZINE: £2.95. monthly
RT DIRECT: Gardeners' World - Gardening from Berryfields, is £18 (RRP E20) incl p&p. To order, call [number removed] (national rate)