The site for the Westfield shopping centre is mothballed, and the City of Bradford Metropolitan Borough Council is considering plans to turn it into a temporary green space.
Developers have lodged a planning application for creating the urban garden on the building site, and proposals include a sensory garden, an undulating landform and wildflowers.
The council is in discussion with arts development organisation Fabric, which wants to see sculptures around the site, artwork on the hoardings and large art installations in the basement area that could be viewed through perspex windows in the hoardings.
Westfield said the RHS had "expressed an interest in becoming involved".
Details of its urban garden planning application are available online.