Sir Harold Hillier Gardens

Romsey, United Kingdom

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Sir Harold Hillier Gardens near Romsey in the United Kingdom is an expansive 180-acre arboretum founded in 1953 by the renowned plantsman Sir Harold Hillier. It houses over 42,000 trees and shrubs representing about 12,000 species, including Europe’s largest National Plant Collections and more than 600 champion trees known for their exceptional size, age, or rarity.

The gardens showcase an impressive variety of themed areas such as the Centenary Border, one of the longest mixed double borders in the country, and one of Europe’s largest Winter Gardens.

Visitors enjoy seasonal displays ranging from magnolias and camellias in spring to vibrant autumn foliage, alongside family-friendly features like tree houses and interactive play areas. The gardens are run as a charitable trust with a focus on horticulture, conservation, education, and recreation. Sir Harold Hillier’s legacy lives on through the continuous development of this world-class garden, making it a cherished destination for plant enthusiasts and the wider public year-round.