Bay Island Bonsai and Bonsai Boon
- Photos and information on membership, activities, exhibits, services and Boon's biography.
- http://www.bonsaiboon.com/

Kofu Bonsai Kai
- Orange County organization offers a description of the art of bonsai, club history, calendar, photos, meeting details, workshops and presentations, founder tribute, officers, new members, recommended vendors, book recommendations, and related links.
- http://www.kofukai.com

California Bonsai Society
- Provides a club newsletter, contacts, meeting schedule, links, and a list of instructors. Centered in Gardena, CA.
- http://www.california-bonsai-society.org/

Monterey Bonsai Club
- Site includes club overview and history, officers, photos, exibition information, and the history of the club.
- http://www.gsbf-bonsai.org/MontereyBonsai/

San Diego Bonsai Club
- Features upcoming events and information, articles, stories, photos, links, chat, discussions and auctions.
- http://www.sandiegobonsaiclub.com

Redwood Empire Bonsai Society
- Includes gallery, events, and schedule. Located in Santa Rosa, California.
- http://www.rebsbonsai.org/

Golden State Bonsai Federation
- State-wide association of California clubs. Provides contact details, events, tips, magazine, teacher's guide, and links to related sites.
- http://www.gsbf-bonsai.org/

Bay Island Bonsai
- A gallery, information on membership, activities, exhibits and services. Located in Northern California.
- http://www.bonsaiboon.com/bib/