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Started in 2014, the TRIAD Fellowship is a partnership among the National Trust's Hidcote Manor Garden in Gloucestershire, UK; the Alliance of Hyogo in Awaji Island, Japan; and Longwood Gardens in Kennett Square, PA, USA.

Each year, two horticulturists from each institution are chosen to participate in the Fellowship. The TRIAD Fellows spend four months living, working, and learning in each of the three world-class public gardens. 

Rotation Schedule




American Fellows Hidcote Manor Garden Longwood Gardens Kiseki No Hoshi
British Fellows Longwood Gardens Kiseki No Hoshi Hidcote Manor Garden
Japanese Fellows Kiseki No Hoshi Hidcote Manor Garden Longwood Gardens


This extraordinary experience exposes these young horticulturists to the field on a globally immersive level. They can connect historical gardens with current design and display trends while working in some of the greatest gardens of today. The Fellows are paid and their housing is provided, allowing them to focus on their training while learning horticulture alongside some of the most knowledgeable staff in the world. The TRIAD Fellows learn about greenhouse technologies, crop scheduling, integrated pest management, plant identification and culture for three distinct regions of the world, plant records management, conservatory management, landscape design and implementation, heritage management, exhibit design, and more.

“The TRIAD Fellowship further expands our leading horticulture education programs and enables us to share our knowledge and best practices on a global scale. We are honored to partner with the Hidcote Manor Garden of the National Trust and The Alliance of Hyogo to offer these aspiring professionals an international, hands-on experience that will be invaluable throughout their careers.”

—Paul B. Redman, President & Chief Executive Officer of Longwood Gardens

About Longwood Gardens

In 1906, industrialist Pierre du Pont (1870-1954) purchased a small farm near Kennett Square, PA, to save a collection of historic trees from being sold for lumber. Throughout his life, Mr. du Pont indulged his passion for gardening, turning his farm into a magnificent horticultural showplace. Today, Longwood Gardens is one of the world’s great gardens, encompassing 1,083 acres of gardens, woodlands, meadows, fountains, a 10,010-pipe Aeolian organ and a 4-acre conservatory. Longwood continues the mission set forth by Mr. du Pont to inspire people through excellence in garden design, horticulture, education and the arts, through programming that includes exhibitions, musical performances by leading artists, renowned horticulture education programs, horticulture research, environmental stewardship and cultural and community engagement. Longwood Gardens is located in Kennett Square PA, USA, about 30 minutes west of Philadelphia.

About The Alliance of Hyogo

The Alliance of Hyogo consists of Kiseki no Hoshi (Miracle Planet Museum of Plants) and the Awaji Landscape Planning and Horticulture Academy (ALPHA) of the University of Hyogo. The former is part of Awaji Yumebutai along with Akashi Kaikyo National Park, the International Conference Center, the Westin Hotel Awaji Island, the Promenade Garden and the Amphitheater. The Alliance was formed in 2013 to gather parties interested in participating in the Great Gardens of the World TRIAD Fellowship.

About Hidcote Manor Garden

Hidcote Manor Garden is one of the most influential 20th century flower gardens in Britain, the archetypal ‘garden of rooms’, setting the style for the English garden in the 20th century. Major Lawrence Johnston (1871–1958), a naturalized British citizen and the garden’s creator, demanded the best in design and plants and was prepared to go to endless trouble and expense to achieve this. Hidcote is the coherent execution of his vision and genius, achieved and perfected over a relatively short period of time. The garden is an exposition of garden design and plantsmanship and a Mecca for garden lovers. Hidcote is a property of the National Trust, a UK conservation charity, established for the purposes of promoting the permanent preservation of lands and tenements (including buildings) for beauty or historic interest for the benefit of the nation.