One of the greatest gardeners of the 20th century, Beth Chatto, recently died at the age of 94. Beth was admired and loved by family, friends and gardeners around the world. One of those friends was another legendary plantsman, Roy Lancaster. He visited the garden in Essex she created with her late husband, Andrew, to discuss the development of what she described as a "horticultural and ecological experiment". Hear Beth and Roy in an interview which was to become an article, Dear Mrs Chatto, in the January 2010 issue of The Garden magazine.