Bob Gilbert is the author of Ghost Trees and presenter of BBC Radio 4's The Passion in Plants. He is also the author of The Green London Way (Lawrence & Wishart, 2012) and has written a column for Ham & High on urban wildlife for the last twenty years. A regular contributor to TV and radio, including Natural World and BBC Radio 4’s The Food Programme, Bob has also been a stand-up comedian, a long-standing campaigner for inner city conservation and chair of ‘The Garden Classroom’, a charity that promotes environmental education in London. Ghost Trees is out in hardback and paperback now.