It is the first time the show, which this year runs from 8-13 July, has had a headline sponsor.
The show, which takes place on a 33-acre site, is the UK's biggest outdoor lifestyle event. It attracts about 160,000 ABC1 key visitors within the Rachel's Organic target market, of whom 67% are women.
Rachel's Organic marketing director Steve Clarke said the sponsorship would enable the brand to engage directly with consumers and introduce newcomers to the brand and products through extensive sampling.
'We shall also use the opportunity to leverage the brand, launch products and support our retail base,' he added.
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