His honours included an associateship of honour of the Royal New Zealand Institute of Horticulture in 1948, presidency of the former Horticultural Educational Association, founder membership and honorary fellowship of the UK Institute of Horticulture, a 1975 CBE for services to horticulture, and in 1976 the Victoria Medal of Honour from the Royal Horticultural Society.
New Zealand | Royal Navy | Royal Air Force | Massachusetts Institute of Technology | Royal Dutch Shell | Royal Society | Royal Albert Hall | Royal Shakespeare Company | Royal Opera House | Royal Victorian Order | California Institute of Technology | Royal Engineers | Royal Australian Navy | Art Institute of Chicago | Royal National Theatre | Royal Canadian Navy | Royal Canadian Air Force | Institute for Advanced Study | Hamilton, New Zealand | Royal Court Theatre | Royal Marines | American Institute of Architects | Royal Commission | Georgia Institute of Technology | Royal Academy of Music | Anne, Princess Royal | Royal Philharmonic Orchestra | Theatre Royal, Drury Lane | Royal Flying Corps | Royal Canadian Mounted Police |