Allen Paterson was from 1973 to 1981 Curator of the Chelsea Physic Garden and from 1981 to 1993 Director of the Royal Botanic Gardens, Ontario. He is a member of the Council of the Royal Horticultural Society, and a Distinguished Advisor to the Board of Brooklyn Botanic Garden. He lives in Dumfriesshire in Scotland.
Award-winning photographer Steven Wooster specializes in the photography of gardens and plants. He lives in London.