American Horticultural Society: Travel Study Events
   The society's program offers tours in the United States and abroad, offering participants the opportunity to visit exceptional private and public gardens. Overview of scheduled events.
   http://www.ahs.org/events/travel_study.htm

Boxwood Tours
   Garden holidays throughout UK and Europe; custom made tours for groups, societies and agents.
   http://www.boxwoodtours.co.uk/

Brightwater Holidays
   Brightwater Holidays specialise in tours of designed gardens in Europe, South Africa, China and Japan
   http://www.brightwaterholidays.co.uk/index.html

Coopersmiths
   Garden, manor house and fine arts tours in Britain, Europe, America.
   http://www.coopersmiths.com/

Expo Tours
   A programme of tours in America and Europe, and custom tours.
   http://www.expogardentours.com/

Garden Route Tour Guides
   Southern Africa registered tour guides.
   http://www.sa-venues.com/travel/gr_tour_guides.htm

Gardenvisit.com
   Advice on garden tour holidays worldwide, primarily in England.
   http://www.gardenvisit.com/garden_tour/garden-tours.htm

Horticulture Magazine Tours
   Organized tours in America and Europe
   http://www.hortmag.com/programs.asp

Infohub
   A selection of travel packages of the theme of gardens.
   http://www.infohub.com/TRAVEL/SIT/sit_pages/Garden_Tours.html

Jeff Sainsbury Tours
   Specializes in garden tours to Great Britain and mainland Europe for the American garden enthusiast.
   http://www.jeffsainsburytours.com/

Pacific Pathways
   Specialists in horticultural, botanical, walking, wildlife and special interest tours to New Zealand and Australia for groups and individuals.
   http://www.pacificpathways.com/

Quantum Tours
   Gardens in Ireland, Scotland, New Zealand, Pacific Northwest of America
   http://www.quantumtours.com/

The Garden Traveler
   Discussion forum for garden travel
   http://forums.gardenweb.com/forums/travel/