Organiser Helen Elks-Smith said: "These awards provide an important mechanism for designers to showcase and promote their work."
Winners from over 20 finalists will be announced at a ceremony on 9 November at London’s Millennium Gloucester Hotel, hosted by garden designer James Alexander-Sinclair. Finalists include Alex Johnson, Amanda Patton and Andrew Fisher Tomlin.
Also in the running are Andrew Wilson, Catherine Heatherington, Charlotte Rowe, Dan Pearson, Debbie Roberts, Hugo Bugg, Ian Kitson, Ian Smith, John Wyer, Juliet Sargeant, Lynne Marcus, Patricia Fox, Stuart Crain and Tim Mackley.
The finalists in the Student Awards are Benjamin Wilkinson, Jens Haendeler and Jon Sims. Meanwhile judges said they looked for and found in many schemes across categories a lightness of touch, good spatial sequences.
They included landscape architects and university lecturers Bill Burford, Richard Sneesby and Trudie Entwistle with SGD chairman Charles Rutherfoord and writer Arabella St John-Parker.
RHS President Elizabeth Banks and lighting expert Sally Storey were supporting judges. Meanwhile Andy Sturgeon and Tom Hoblyn formed the main judging panel for the Society of Garden Designers Student Awards.