Lady Salisbury has been a gardener since, as a child in the 1930s, she cultivated tiny patches of her parents' gardens in Ireland and the West of England. Later, as chatelaine first of Cranborne Manor and then of Hatfield House, she revived two of the great historic gardens of England. Then there the gardens that, as a professional garden designer, she has created for others, notably for the Prince of Wales at Highgrove and for the Museum of Garden History and Cosby Hall in London ('As a...