14:45Sissinghurst: An Unfinished HistoryEpisode 1: ChildhoodBBC Radio 4 Extra Duration: 15 minutes Mon 24th Jun 2013, 14:45 on BBC Radio 4 ExtraAdam Nicolson's story of the popular British garden, started in 1932 by grandparents Vita Sackville-West and Harold Nicolson.GenresFactualFactualHomes & GardensSeriesSissinghurst: An Unfinished History Source: BBC Online