Featured Instructors
Seth Nelson
Seth Nelson’s approach to Bonsai comes from a respect for tree health and longevity. “If the work done puts the tree into a state of decline, that work had no meaning.”
Nelson formed his foundations under the mentorship of Jim Van Landinham, a tropical species specialist.
In 2017, Seth met Juan Andrade, a former apprentice at Aichi-En, who introduced him to more advanced techniques. This friendship eventually led to a recommendation for an internship to Junichiro Tanaka, where Seth served under Tanaka-San’s guidance.
Nelson’s experience has taught him patience, respect, and humility. His mission is to continue working closely with hobbyists and collectors, creating new trees, and sharing the lessons he’s learned throughout his journey.
Julian Tsai
Julian Tsai is a full-time bonsai professional and artist based out of Southern California. In 2018, Tsai began an apprenticeship in Osaka, Japan under Keiichi Fujikawa of Fujikawa Kouka-en.
After returning to the US, Julian furthered his skillset by learning from professionals Peter Tea and John Wang. In 2022, he launched his career as a full-time bonsai professional, launching his business "Just Bonsai."
Today, he collaborates with customers, works on collections, and provides educational services.
"Bonsai, in its origin, is a multi-generational practiced art. That is to say in both respects, the medium (the tree) and practice exceeds the human lifespan. Trees, like us, are living and thus constantly changing and growing. Just as we strive to continuously learn and improve our own lives, we can adopt similar principles which bring the best out of our trees.
- Philosophy of Julian Tsai
Steve Iwaki
Steve Iwaki is a second-generation bonsai artist. His father, Ted Iwaki, was one of the founding members of the California Bonsai Society in the 1950’s. Steve’s personal bonsai journey began over 30 years ago when he discovered a bonsai class at a local recreation center. It was taught by Japanese gardeners, much like the group his father socialized with when he was growing up. Today, Steve is the president Sei Boku Bonsai Kai in San Mateo and regularly displays, collects, teaches, and demonstrates throughout California.
At this meeting, Steve will be helping intermediate attendees style 20 year old multi-truck collected boxwoods into an oak-style bonsai. The small leaves and fine-fissured bard on boxwoods make them ideal for bonsai material.
David Nguy
David Nguy is well known for his work with California Junipers and Black Pines. His 35+ years of experience includes studying with sensei Harry Hirao, Ben Oki, Ernie Kuo, and Masahiko Kimura in Japan. David’s skills and advanced techniques can be found in his signature trees and has been referred to as “Mr. California Juniper” by the Golden State Bonsai Federation.
Currently a featured instructor, David travels the world to preside over shows, conduct demonstrations, and oversee workshops at various clubs and international exhibitions.
Regional and Statewide Bonsai Events
Bonsai Rendezvous
October 24 - 26 2025
Suthin Sukosolvisit and Mauro Stemberger will host Bring Your Own Tree workshops on Friday. Mulitple workshops will be held Friday and Saturday. Vendors all three days. Free educational seminars and Bring Your Own Bonsai hospitality hours. Live and silent auctions.