The garden, set to open in summer 2017, will "challenge perceptions of conventional kitchen gardens and showcase an extraordinarily diverse range of edible plants. From the everyday to the exotic, including edible ornamentals, from yams and chickpeas to lima beans and tomatillos, the Global Growth Vegetable Garden aims to inspire people to grow their own and demonstrate the myriad of edible possibilities that exist."
Horticulturist Matthew Oliver said: "We are hugely excited about this vegetable garden. It’s a unique development and with the revival of interest in growing your own fruit and vegetables, we hope it will become as much of a destination as the ornamental parts of Hyde Hall."
Designed by Suffolk-based garden and landscape designer Xa Tollemache, its circular layout will be sectioned into four quarters, representing the continents of Europe & the Middle East, Asia, North & Central America and South America. The centrepiece will be a bespoke 14m (46ft) wide, 7m (23ft) high, octagonal glasshouse manufactured by Hartley Botanic.
Groundworks for the new garden are underway. Soil preparation will start this summer followed by planting of the key structural elements, which includes hedging, trees and shrubs.
Meanwhile, the RHS has an exhibition at Wisley showing its plans for redevelopment of the gardens, which are due to go in for planning permission this spring.