Roger Turner trained as an architect and now works as a landscape designer. He is a knowledgeable plantsman, active in the Hardy Plant Society and founding member of the Gloucestershire group of the National Council for the Conservation of Plants and Gardens (NCCPG). Author of the monograph, Euphorbias: A Gardener's Guide, Roger Turner also wrote Better Garden Design and Capability Brown. He contributes to a number of journals and magazines including Hortus and The English Garden, and lectures on a wide range of subjects.