I just read the upcoming meeting announcement from the Vancouver Rhododendron Society, followed the link to their webpage, and discovered that at the meetings, Douglas Justice brings in cuttings from UBCBG and gives "a 15-20 minute presentation covering each plant, some history, characteristics, and many other interesting facts". On the Bouquet Page | Vancouver Rhododendron Society page, they have videos of three of the presentations. Only some of the cuttings are rhododendrons. The names of what is included are listed in the description, and the name of the plant being presented is on the screen.