David Easterbrook has been curator of the Montreal Botanical Garden's bonsai collection since 1982. Among the most prestigious collections in North America, it includes 30 masterpiece bonsai donated by the Nippon Bonsai Association, 40 dwarf potted trees from the collection of Hong Kong banker Dr. Wu Yee-Sun, over 300 penjing donated by the People's Republic of China, new specimens of Vietnamese bonsai and a North American bonsai collection featuring outstanding mature bonsai created by North American experts.

David began growing bonsai in 1970 and is owner of a bonsai nursery. He studied bonsai in Japan in 1981 and teaches regular bonsai classes as well as being a well-known lecturer and demonstrator in northeastern US and Canada and also France. He served as president of the Montreal Bonsai Society in 1982 and 1983 and was chairman of the American Bonsai Society convention which was held in Montreal in July 1988. He has also authored two books on bonsai and bonsai care and techniques.