URSULA BUCHAN is an award-winning garden journalist and author of more than 20 years' experience. She writes regularly on gardens for the Daily Telegraph and the Spectator and has published many books.ANDREW LAWSON is widely regarded as England's leading garden photographer. He has provided the photographs for many books. He holds the Royal Horticultural Society's Gold Medal for Photography and the Lifetime Achievement Award of the Garden Writer's Guild. His garden in Oxfordshire is open under the National Gardens Scheme.