The contract is worth in excess of £7.5million in revenue over the initial five-year contract term.
Simona Oproiu, business development director at Graysons, said: “We are delighted to welcome Wakehurst, Kew’s wild botanic garden, to our portfolio.
“It is a remarkable location and we are greatly looking forward to bringing our flair for independent eateries to the fore, welcoming some fantastic local suppliers on the journey with us.
“We have exciting plans for enhancing the visitor experience with significant refurbishment planned for 2019, and we can’t wait to get started in the coming year. Overall, we share an ethos with Wakehurst, grounded in a conscientious way of working and protecting the environment, and that’s what will drive the partnership.”
Graysons will be managing and delivering day visitor catering in Wakehurst’s Seed Café, Stables restaurant and Redwoods coffee shop, as well as providing a seasonal rotation of pop-ups in the landscape.
Graysons will also facilitate private and corporate external events throughout the year in Wakehurst’s Mansion and the Millennium Seed Bank.
Tony Sweeney, director of Wakehurst, said: “We are very pleased indeed to have Graysons onboard at Wakehurst and think the company is a great fit for us. The plant-based menus concentrating on locally sourced, fresh ingredients should be well received by our visitors. Graysons emphasis on sustainability is also exactly right and dove-tails nicely with Wakehurst’s key objectives.”