Since 1929 the Loder Cup has been awarded to individuals and groups who have made significant contributions to plant conservation work in New Zealand.
Inscribed on the Cup are the words: "Offered to Lovers of Nature in New Zealand to encourage the protection and cultivation of the incomparable flora of the Dominion by Gerald W.E.Loder, President of the Royal English Arboricultural Society 1926."
Loder Cup winners
- 2025 Dr Kelvin Lloyd
- 2024 John Barkla
- 2023 Mike Harding
- 2022 Simon Walls
- 2021 Dr Beverley Clarkson
- 2020 Graeme Atkins
- 2019 Chris Horne
- 2018 Robert McGowan
- 2017 Professor Peter de Lange
- 2015/16 Barbara and Neill Simpson
- 2014 Clive Paton
- 2013 Nicholas Head
- 2012 Dr Ralph Allen
- 2011 Mark Dean
- 2010 Dr Colin Burrows
- 2009 Dr Philip Simpson
- 2008 Shannel Courtney
- 2007 Amanda Baird
- 2006 Bruce Clarkson
- 2005 Ewen Cameron
- 2004 Colin Ogle
- 2003 Dr Gerry McSweeney
- 2002 Marge Maddren
- 2001 Dr Colin Meurk
- 2000 Jorge Santos
- 1999 Mrs Chris and Mr Brian Rance
- 1998 Supporters of Tiritiri Matangi
- 1997 Isabel Morgan, Napier
- 1996 Native Forests Restoration Trust
- 1995 Dr David Given
- 1994 Dr Peter Johnson
- 1993 Michael Greenwood
- 1992 Gordon and Celia Stephenson
- 1991 Reginald Janes
- 1990 Dr Brian P J Molloy
- 1989 No award made
- 1988 Arthur Blair Cowan MBE
- 1987 Hugh Dale Wilson
- 1986 Roderick Syme MBE
- 1985 Audrey Eagle
- 1984 Dr Eric John Godley
- 1983 Roy J Peacock
- 1982 Arthur Williams Ericson
- 1981 Raymond H Mole
- 1980 Whangarei Forest and Bird Protection Soc
- 1979 Mrs Christina L and Mr Roger R Sutton
- 1978 Lawrence J Metcalf
- 1977 Reginald Ivan Bell
- 1976 Waipahihi Botanical Society
- 1975 Assoc Prof Alan Francis Mark
- 1974 Alexander W Anderson
- 1973 Katie Reynolds
- 1972 Arthur David Mead
- 1971 Violet Ada Briffault
- 1970 Mrs Muriel E and Mr William E Fisher
- 1969 Patrick John Devlin
- 1968 Victor C Davies OBE
- 1967 Prof John T Salmon
- 1966 Oliver Hunter
- 1965 Arthur Farnell
- 1964 Dr David Alfred Bathgate
- 1963 Nancy M Adams
- 1962 Bernard H N Teague
- 1961 Charles Thomas Keeble
- 1960 William Martin
- 1959 Charles Cameron
- 1958 Hon Ernest Bowyer Corbett
- 1957 Frederick William Lokan
- 1956 Frank Singleton Holman
- 1955 Michael C Gudex MAM Sc NDH(NZ) AHRIH NZ
- 1954 Norman L Elder
- 1953 Perrine Moncrieff
- 1952 Marguerite W Crookes
- 1951 Assoc Prof Lawrence W McCaskill
- 1950 Arthur Paul Harper
- 1949 Noeline Baker
- 1948 Andrew Davidson Beddie FRIH(NZ)
- 1947 N R W Thomas LLB NDH(NZ)
- 1946 Royal Forest & Bird Protection Soc and Captain E Valentine Sanderson
- 1945 Walter Boa Brockie
- 1944 Norman Potts
- 1943 James Speden
- 1942 A W (Dick) Wastney
- 1941 Edward Earle Vaile
- 1940 Major P H Johnson
- 1939 William A Thomson
- 1938 Elizabeth Knox Gilmer
- 1937 Auckland Institute and Museum and Lucy M Cranwell
- 1936 John Scott Thomson and George Simpson
- 1935 Trustees of R C Bruce
- 1934 Lord Bledisloe DSc, PC, GCMG, KBE
- 1933 T Waugh and son
- 1931 and 1932 Henry Bennett and son
- 1929 Duncan and Davies Ltd