Ben is admired and in high demand worldwide as a Japanese Garden designer, especially for his use of stones in his compositions. Ben's design work includes the garden of screen star Cybil Shepard in Memphis, Tennessee, and others in the Pacific Islands and South America. Ben is a curator of the Bonsai Collections at the Huntington Library and Botanical Gardens in San Marino, California.
Ben studied bonsai under world master John Naka, and has assisted him with demonstrations and meetings. Ben has become one of the internationally known bonsai masters, and takes a key role at conventions by conducting workshops, demonstrations, and critique sessions.
Ben has been growing and teaching bonsai since 1958, specializing in California Juniper. He shares his hands-on experience and expertise in his article, "Collecting California Junipers", published in a British magazine. He is well known for his rugged, freeform style, fine detail work, fast wiring, and skillful tree-splitting techniques.
In Indiana, Cheryl and Charles Owens honored Ben with both the Ben Oki International Design Award and the Ben Oki National Design Award -- the awards for excellence in bonsai design quality -- sponsored by Bonsai Clubs International (BCI) and the American Bonsai Society, respectively.
Since 1984, Ben has been leading "Ben Oki's Japan Bonsai Tour" to visit gardens, nurseries, and pottery shops. Ben escorted the "Bonsai and Suiseki Exhibit and an Extended Tour of Japan" at the 10th BCI World Bonsai Convention tour in 1989.
In 2001, Ben Oki received the Ryokuhaku-Juyukosho (Green and White Achievement Award) from the Agricultural Society of Japan, and in 2003 he recieved the GSBF Circle of Sensei Award.
Ben is a former vice president of the California Bonsai Society, and program chairman of the Satsuki Society. Ben is also an active member of other bonsai organizations, including the American Bonsai Society, the BCI, the Nampu Kai, and the Southern California Chapter of tthe Japanese Satsuki Society.
Ben is also an honorary member of the following organizations:
Alabama Bonsai Society
Hotsprings Bonsai Society (Arizona)
Atlanta Bonsai Society
Bonsai Society of Cali (Colombia)
Lincoln Bonsai Society (England, UK)
Brandywine Bonsai Society (Pennsylvania)
Marina Bonsai Club
Coastal Carolina Bonsai Society
Memphis Bonsai Society (TN)
Dungeness Bonsai Society of Sequim, WA
Sansui-Kai of Southern California
Greater Cincinnati Bonsai Society
South African Bonsai Society
Greater Kansas City Bonsai Society
Taguchi Bonsai Club (Vancouver, B.C.)
Bonsai Center Ecuador
Montreal Bonsai Society (Canada)