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

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

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

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

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

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

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

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

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

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/

Lucas and Randall
Tours in England, United Kingdom, Great Britain, France, Italy, Mediterranean, Netherlands, Tuscany, Holland, and Spain.
http://www.lucasandrandall.com/index.htm

Plant Adventures
Specializes in horticultural travel to exotic locations, mostly Central and South America. Overview of past and planned trips.
http://www.plantadventures.com

Plant Lovers Discovery Tours
Offers several themed garden one-day and multi-day tours in the Philadelphia area. Descriptions, packages, and booking information.
http://www.plantloverstours.com