The show is held at Bath from 31 August-2 September
Cheddar is part of the Park Garden Centres group. The centre is returning for a second year and will again run the show's Instant Garden Challenge, where different competing teams are drawn from gardening clubs.
Sarah Raven, Toby Buckland and Christine Walkden will be speakers this year.
The Edible Bus Stop competition will also take place in conjunction with Cleeve Nursery.
Bright Green Shoots - innovative gardening entrepreneurs showcasing gardening ideas and trends, as selected by designer Jo Thompson, will also appear.