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The new irrigation pump house at Royal Botanic Gardens Kew was designed by Hugh Broughton Architects to integrate into the natural environment and meeting the institution’s climate goals. Part of Kew’s broader strategy to achieve Climate Positive status by 2030, the pump house ensures water security for the gardens while supporting Kew’s commitment to environmental stewardship.
The structure’s design is inspired by nature, featuring an interlocking arrangement of timber struts that resemble the organic shapes of fallen leaves and palm fronds. This is achieved through the use of Scottish larch, a timber chosen for both its durability and ability to complement the surrounding landscape.
Xylotek developed the technical design with engineers Format, and led the procurement and installation of the timber elements and the steel structure (fabricated by Rank Engineering).
The larch timber’s natural finish will gradually silver with age, enhancing the structure’s integration into the garden environment. The pump house’s filigree-like exterior plays with light and shadow, blending into the lush surroundings while obscuring the machinery inside.
By using UK-sourced larch and emphasizing low-impact construction, the pump house presents a solution that works in harmony with the environment. It will help Kew reduce its reliance on mains water by utilising captured rainwater and groundwater runoff, for the irrigation of its unique plant collection.
