In this new role, TV gardener Klein will champion RHS Garden Bridgewater as it evolves and eventually opens to the public in 2019.
Klein said: "When I heard about the future RHS Garden Bridgewater I couldn’t believe it: my grandfather's first job was as a garden boy at the garden - it felt like real serendipity. I am thrilled to be an RHS ambassador for this unique place, and I cannot wait to see how it develops."
Klein joins Floella Benjamin, Alan Titchmarsh, Mary Berry, Nick Knowles, Chris Beardshaw, Jekka McVicar, Adam Frost, George Hassall and Jamie Butterworth as RHS Ambassadors.
Klein added: "I hope everyone loves this garden as much as I know I will and I look forward to the people of Manchester and Salford having somewhere close at hand to celebrate gardening."
The 154-acre RHS Garden Bridgewater is planned to open in 2019 as part of the RHS wider 10-year £160 million investment programme.
- An arrival experience planted as a perennial meadow with a network of web-like paths guiding visitors to the historic walled garden.
- Restoration f the 4ha walled garden, one of Worsley’s most original features.
- A new lake, linking the visitor building to the heart of the historic landscape of the garden which is formed by the Nesfield terraces and the original lake.
- A large open café terrace to the east.
All plans at this stage are subject to lease and planning permission. The RHS is working with the owners of the historic estate, Peel Land and Property, and Salford City Council to fund the garden.