Carolyn Fry is a science and environment writer and editor based in West Sussex, UK. She has written/co-authored 11 books on environmental and historical themes, and appeared in the BBC 2 documentary 'Cruikshank on Kew: The garden that changed the world', to explain how plants were used to build the British Empire. Carolyn has also contributed news stories and articles to New Scientist, The Times, The Guardian, The Independent, BBC History, BBC Earth, BBC Wildlife and more. She is a former Editor of Geographical, the Royal Geographical Society's magazine. She has worked on a number of title for Kew and most recently published Trees: 10 Things You Should Know (Seven Dials).

Christina Harrison is the former editor of Kew Magazine. She trained as an ecologist and botanical horticulturalist and has an MA in Garden History, for which she specialised in the trees at the Royal Botanic Gardens, Kew. She is author or co-author of several books including Remarkable Trees (Thames & Hudson).