Crunch time: a tale of two apple trees ? in pictures

When renowned landscape photographers Jem Southam and Barbara Bosworth decided to each document an apple tree for a year ? the former near Exeter in Devon, the latter in New England in the US - their results were startlingly different. Their collaboration started a lively exchange that became a book: Duet on the Apple Blossom ( Dust Collective ). An exhibition inspired by the book, Notes on a Duet, is at Flow Photographic Gallery in London, by appointment, until 14 September