The competition reaches its climax with just two pairs of professional garden designers remaining, competing for the crown in the final. They are tasked to create show gardens at one of the world's greatest gardens, RHS Garden Wisley in Surrey, for a budget of £10,000. With a brief set by the garden's curator, they need to take their designs to the next level if they want to win. They have only 48 hours to complete them, and adding to the pressure, the weather is also against them.