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Author of many garden books, several now in foreign language editions, covering climbers, containers, garden science, colour in the garden and house plants.
‘Digging Deeper’ won a Garden Writers’ Guild ‘Enthusiasts Book of the Year’ award for its insight into what is going on inside plants both above and below ground. Regular contributions to BBC Gardeners’ World magazine and occasional articles for national newspapers (Telegraph, Guardian) and various gardening periodicals.