The designer is former Society of Garden Designers chair Juliet Sargeant.
The aim of the garden is to raise public awareness of the issue. The garden has a theme of locked doors.
Those behind the garden are waiting to see if they have been successful with their entry.
Other than Sargeant, gardens are believed to be planned by Jo Thompson, Ann Marie Powell and at least one other female designer.
There is set to be a herb garden and Coutts could also have a garden. Saga has also been mentioned as a potential backer.
The RHS was due to meet today to decide which gardens it will pick. They will be announced on 10 November.