The American will make a rare UK appearance next week to talk about the famous Little Sparta garden and the "afterlife of gardens", both of which he has written books on.
Little Sparta in the Pentland Hills near Edinburgh is considered Ian Hamilton Finlay's greatest work of art and includes strong sculptural elements.
"John has had a major influence on our thinking on historic gardens and is a noted contemporary commentator," said a spokesman for the museum.
John Dixon Hunt will talk at the Garden Museum, Lambeth Palace Road, on the evening Tuesday 8 June. Tickets cost £10, £5 for museum friends.
For booking details visit: http://dixonhuntvista.eventbrite.com/ or call Camilla on 020 7401 8865 ext 822.