A: Single outstanding contribution to botany (click for details)
B: Lifetime achievements in botany (click for details)
| Year | Award | Recipient |
|---|---|---|
| 1969 | B | Jacques Rousseau |
| 1970 | B | Rollo Othwell Earl |
| 1971 | A | Job Kuijt |
| 1971 | B | Alf Erling Porsild |
| 1972 | A | Mildred Katherine Nobles |
| 1972 | B | Vladimir Joseph Krajina |
| 1973 | A | Marvin William Bannan |
| 1973 | B | Clarence Frankton |
| 1974 | A | Rolf Sattler |
| 1974 | B | John G. Coulson |
| 1975 | B | Roy Franklin Cain |
| 1976 | B | Douglas Barton Osborne Savile |
| 1977 | B | Harold Johnston Brodie |
| 1978 | A | Ronald Darnley Gibbs |
| 1978 | B | Taylor Armstrong Steeves |
| 1979 | A | Bernard René Baum |
| 1979 | B | Ibra Lockwood Conners |
| 1980 | – | No medal awarded |
| 1981 | B | Stanley John Hughes |
| 1982 | B | Leslie Laking |
| 1983 | B | Thomas C. Hutchinson |
| 1984 | A | Evelyn Chrystalla Pielou |
| 1985 | B | James Cnningham Ritchie |
| 1986 | A | Wilfred Borden Schofield |
| 1986 | B | Pierre Dansereau |
| 1987 | B | Clayton Oscar Person |
| 1988 | B | Paul R. Gorham |
| 1989 | B | William Frederick Grant |
| 1990 | B | Robert Joseph Bandoni |
| 1991 | A | George William Argus |
| 1991 | B | Donald MacPhail Britton |
| 1992 | A | Paul A. Keddy |
| 1992 | B | Jack Lamont McLachlan |
| 1993 | B | R. Larry Peterson, University of Guelph |
| 1994 | A | Richard Irving Greyson, University of Western Ontario |
| 1994 | B | George L. Barron, University of Guelph |
| 1995 | A | Tumkur R. Nag Raj, University of Waterloo |
| 1995 | B | Ernie Small, Agriculture Canada, Ottawa |
| 1996 | B | Margaret Elizabeth McCully, Carleton University |
| 1997 | A | William James Cody, Agriculture and Agri-Food Canada, Ottawa |
| 1997 | B | Anward Maun, University of Western Ontario |
| 1998 | B | Kathleen Margaret Cole, University of British Columbia |
| 1999 | B | J.-André Fortin, Université de Montréal |
| 2000 | B | David Horsfall Stuart Richardson, St. Mary’s University |
| 2001 | B | W. Bryce Kendrick, University of Waterloo (emeritus) |
| 2002 | B | Nancy Jean Turner, University of Victoria |
| 2003 | B | Irwin M. Brodo, National Museum of Canada |
| 2004 | B | Chendanda Chengappa Chinnappa, University of Calgary |
| 2005 | B | Denis Barabé, University of Montreal |
| 2006 | A | Gerald Alfred Mulligan, Agriculture and Agri-Food Canada, Ottawa |
| 2006 | B | Spencer C. H. Barrett, University of Toronto |
| 2007 | B | Scott Redhead |
| 2008 | B | Vipen Sawhney, University of Saskatchewan |
| 2009 | B | Nancy G. Dengler, University of Toronto |
| 2010 | B | Paul B. Cavers, University of Western Ontario |
| 2011 | A | Carol Peterson, Larry Peterson and Lewis Melville |
| 2012 | B | Paul Miles Catling, Agriculture Canada |
| 2013 | B | Yolande Dalpé, Agriculture Canada |
| 2014 | B | Edward Chee-Tak Yeung, University of Calgary |
| 2015 | B | Jim Pojar |
| 2016 | A | Luc Brouillet, Université de Montréal |
| 2017 | A | John Wilson Sheard, University of Saskatchewan |
| 2017 | B | Roy Turkington, University of British Columbia |
| 2018 | B | Jean Faubert |
| 2019 | A | Jacques Cayouette, Agriculture and Agri-Food Canada Ottawa |
| 2019 | B | Anne Bruneau, Université de Montréal |
| 2020 | B | Yves Bergeron, Université du Québec en Abitibi-Témiscamingue |
| 2021 | B | Patrick von Aderkas, University of Victoria |
| 2022 | B | Suzanne Simard, University of British Columbia |
| 2023 | B | James Scott Pringle, Royal Botanical Gardens, Ontario |