The three-day event will take place from Thursday, September 18, to Saturday, September 20, in the Yeo Valley Organic Garden in Blagdon.
The festival will feature a range of activities, including talks, panel discussions, workshops, and demonstrations.
The aim is to encourage people of all gardening experience levels to grow with nature in mind.
The first headliners announced for the main speaker stage are Arit Anderson, Alys Fowler, and Frances Tophill.
They will be joined by other well-known gardeners, including John Little, Kate Bradbury, and Mark Diacono.
Sarah Mead, head gardener of Yeo Valley Organic Garden, said: “We are a nation of gardeners with an estimated 30 million gardens between us – that’s about 433,000 hectares of domestic gardens, a bit more than a fifth the size of Wales.
“The Yeo Valley Organic Garden Festival aims to inspire us all to get greener in the garden – wouldn’t that be something?
“To that end, the Yeo Valley Organic Garden Festival will be an unpretentious, upbeat and light-hearted celebration of gardening, where all garden enthusiasts are welcome.
“We are determined to ditch the formalities and the ‘one size fits all’ approach to organic gardening, and provide some myth-busting, jargon-breaking, real-life practical solutions to suit every garden and every budget.”
Each day of the festival will have a unique theme.
Thursday will sow the ‘Seeds of Change’, with Arit opening the festival with a talk on gardening for the climate, now and in the future.
Friday will celebrate ‘People & Pollinators’, with Alys talking about perennial vegetables that promote a healthy ecosystem.
Saturday concludes the festival with ‘Mission Possible’, with Frances helping to inspire the next generation of gardeners.
Frances said: “I am thrilled to be speaking at the first ever Yeo Valley Organic Garden Festival.
“We desperately need to speed up the conversation about climate-resilient gardening.
“I am passionate about finding and encouraging a new generation of gardeners to dig in and get their hands dirty, which really starts with the reminder that there is no ‘right and wrong’ way of creating a garden.
“This festival promises a positive and inspiring get-together for gardeners of all skill levels to deepen their connection with nature.”
Tickets range in price, with the maximum being £60 for a three-day adult ticket.
Concessions are available for students, Yeokens customers, RHS, Garden Organic and Gardens Illustrated members.
Car parking is limited and car sharing is being encouraged.
More headline speakers, panellists and exhibitors will be announced over the coming weeks.
Tickets are on sale now at yeovalley.co.uk/events/yeo-valley-organic-garden-festival-2025.
