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.
Boxwood Tours - Garden holidays throughout UK and Europe; custom made tours for groups, societies and agents.
Brightwater Holidays - Brightwater Holidays specialise in tours of designed gardens in Europe, South Africa, China and Japan
Coopersmiths - Garden, manor house and fine arts tours in Britain, Europe, America.
Gardenvisit.com - Advice on garden tour holidays worldwide, primarily in England.
Hidden Treasures Botanical Tours - Offers horticultural and birding tours throughout the world, emphasizing public and private sites not often seen. Includes programs for Master Gardeners and the American Horticultural Society.
Infohub - A selection of travel packages of the theme of gardens.
Jeff Sainsbury Tours - Specializes in garden tours to Great Britain and mainland Europe for the American garden enthusiast.
Pacific Pathways - Specialists in horticultural, botanical, walking, wildlife and special interest tours to New Zealand and Australia for groups and individuals.
Plant Adventures - Specializes in horticultural travel to exotic locations, mostly Central and South America. Overview of past and planned trips.
Plant Lovers Discovery Tours - Offers several themed garden one-day and multi-day tours in the Philadelphia area. Descriptions, packages, and booking information.
Quantum Tours - Gardens in Ireland, Scotland, New Zealand, Pacific Northwest of America