Cook Mary Berry CBE has been announced as the latest RHS ambassador at RHS Hampton Court Palace Flower Show.
The announcement comes as a survey commissioned by the RHS found that the top three reasons gardeners grow produce are because of the taste, because it saves money and is better for the environment, reducing food miles.
The survey also found 70 per cent of gardeners grow some fruit and vegetables and, of the 30 per cent who don't, nearly 70 per cent would like to. The biggest reason they give that stops them growing food is not having enough space, followed by not enough time.
Berry said: "I've been a member of the RHS for 30 years, supporting its charitable work and enjoying many visits to its beautiful garden in Wisley, which inspires over one million visitors a year with world-class horticulture.
"We also have a culinary herb garden, grow fruit and vegetables in our garden and enjoy cooking the produce we've grown. Our latest success was fennel bulbs, which I love. I've yet to perfect celeriac - the results have been rather pathetic.
"There is great satisfaction with growing your own produce; we grow what we enjoy most and what is not too difficult to achieve success. I think it is important that children know where food comes from and that they should be encouraged to be hands on - the results are so rewarding."
Berry will be at RHS Hampton Court Palace Flower Show giving cookery demonstrations on 10 July in the Growing Tastes Cookery Theatre.
She will be on the BBC2 coverage of the RHS Hampton Court Palace Flower Show at 8pm on 10 July and will also be opening the RHS Wisley Flower Show on 2 September 2014.
She becomes the fifth RHS Ambassador, joining Alan Titchmarsh, James Wong, Nick Knowles and Adam Frost.