The garden, which is being entered into the show by the HTA-run APL and the Society of Garden Designers, has been designed by Dorset-based Amanda Patton.
Patton is today (6 March) in meetings with sponsor Bradstone to decide on the materials to be used in the garden and contracts for the work will be sent to APL award winners in mid-March.
Some of the award winners will bring life to Patton's design, which is inspired by poet Walter de la Mare's The Listeners.
Her aim was to convey the eeriness of the 1912 poem in the design by using contrasts of dark areas highlighted with very pale colours.
Patton said: "One of the things I feel very strongly about is the creation of atmosphere in a garden and how the design makes you feel."
APL chairman James Steele-Sargent said although no landscapers had yet been appointed to create the garden, he expected a good response as the RHS Hampton Court Palace Flower Show would be a good place to showcase their work.
He added: "We're going to send out contracts to each of the winners in mid-March detailing what is involved in the work for the garden.
"It's very technically and contractually tied up and we expect to have responses from the winners on whether they want to take part by the end of March."
In 2002, Patton showed a Somerset Revival garden at Chelsea which received a silver-gift medal from the RHS.