Past speakers have included:
- 2011
- Lynden Miller, “Parks, Plants, and People: Beautifying the Urban Landscape”
- 2010
- Gordon Collier, “A Land Apart: New Zealand’s Remote Offshore Chatham Islands”
- 2009
- Roy Lancaster, “Mad About Plants — A Plantsman’s Garden”
- Download Roy’s Plant List (PDF)
- 2008
- Kathryn Gustafson, “Landscape in a Changing Environment”
- www.ggnltd.com, photo courtesy Charles Hopkinson
- 2007
- Graham Rankin, “The Most Beautiful Garden in Wales”
- www.aberglasney.org
- 2006
- Peter Valder, “The Romance of Chinese Garden Plants: Their Role in Art, Literature, Symbolism and Everyday Life”
- 2005
- Julie Moir Messervy, “Inspired by Bach: Creating the Toronto Music Garden with Yo-Yo Ma”
- www.jmmds.com and blog at www.blog.jmmds.com
- 2004
- Roger Phillips, “Adventures in Plants and Roses”
- www.rogersplants.com
- 2003
- Frank Cabot, “The Maturing of a Garden”
- 2002
- Penelope Hobhouse, “Nature and Art: Keeping the Balance”
- 2001
- Daniel J. Hinkley, “Life in My Garden”
- www.danieljhinkley.com
- 2000
- Ken Druse, “The Collector’s Garden”
- www.kendruse.com
- 1999
- Daniel J. Hinkley, “Endless Bounty: Plants for Northwest Gardens from Around the World”
- 1998
- Roy Lancaster, “Travels of a Plantsman: An Account of Recent Travels in China, Japan and Chile”
- 1997
- Judith Tankard, “Walking in the Bootsteps of Gertrude Jekyll: Her Influence on Beatrix Farrand and Ellen Shipman”
- www.judithtankard.com
- 1996
- Jim Gardiner, “A Year at the RHS Garden: Past, Present and Future”
- 1995
- Sir Ghillean Prance, “Plant Diversity and Conservation from Brazil to Kew Gardens”