Following the withdrawal of Australian nursery Fleming's, which was caught in bushfires in February, a large show garden site became vacant.
The RHS's answer was to ask award winning landscape designer Sarah Eberle to create three "credit crunch gardens" within the space.
The RHS asked her to provide some light relief in this time of economic uncertainty by installing entertaining, environmentally responsible gardens on a low budget.
Sarah Eberle has been foraging in scrap yards and borrowing plants so she can build the gardens.
The Overdrawn Artist's Garden will feature hard landscaping and furniture made from items found at a scrap yard. Paving will be constructed of steel grid panels filled with sand, gravel and crushed CDs.
To reflect an owner who likes to protect his own assets the Off-Shore Garden will revolve around a water feature which allows the garden to be completely flooded to prevent access. A remote controlled boat allows the owner to while away his time when away from his tax haven.
The Banker's Garden will be based around the board game Monopoly and will include garden furniture shaped like a dice and shaker.
RHS shows organiser Bob Sweet said: "The gardens are a superb way to highlight some great ideas to recycle and reuse materials in the garden and aim to help us retain our sense of humour during an enormously challenging time."