Mammoth Auction & Sale

The Mammoth Auction & Sale is scheduled for February 17 and 18, 2024. This event is the major annual fundraiser for the Bonsai Garden at Lake Merritt, a world class museum of fine bonsai. All proceeds go towards the annual costs of operations.

Please consider being a volunteer during the two-day event. An easy way to sign up is by using Sign Up Genius online app Bonsai Garden at Lake Merritt: BGLM Mammoth Auction & Sale 2024 ( Or contact George Haas at and request a volunteer role.

Live auction preview 12:00 p.m. Saturday, February 17.

Live auction starts at 1:00 p.m. Saturday, February 17.

Vendor sales starts at 9:00 a.m. Sunday, February 18.

Bargain sales starts at 10:00 a.m. Sunday, February 18.

The First 25 Years of the Bonsai Garden at Lake Merritt

On November 6, 2024, the Golden State Bonsai Federation’s Bonsai Garden at Lake Merritt, in Oakland, California, will be celebrating its first 25 years. It was as early as 1974, when the concept for the bonsai garden came about during a conversation between Toicho Domoto and Bill Hashimoto, two notable Japanese American bonsai pioneers. They were interested in preserving bonsai produced in northern California. They understood bonsai required a permanent place to continue to thrive. They asked themselves what will happen when we can no longer care for and maintain our bonsai trees? The answer to their question was and is the Bonsai Garden at Lake Merritt.

On April 5, 1997, an official groundbreaking ceremony was held at the site located within the Gardens at Lake Merritt. Construction took more than two years. Support for the bonsai and suiseki display garden came from individuals and bonsai clubs throughout the State of California. Hundreds of volunteers and donors were responsible for making the concept into a reality.

BGLM opened its gates to the public on November 6, 1999, by hosting a grand opening celebration of bonsai and suiseki, held on site at the Gardens of Lake Merritt and Lakeside Park Garden Center. Dennis Makishima was master of ceremonies for the grand opening, including then Mayor Jerry Brown, John Naka who talked at length, Harry Hirao, Yasuo Mitsuya of Japan, recreation and parks Officials, and many more. In addition to the ribbon cutting, there was a lively celebration inside the Lakeside Park Garden Center; well attended, Japanese Taiko drum music, donated sake keg, etc.

Since the gates were opened to the public, the collection has dramatically grown in size. The most significant historic and legacy trees include the historic Daimyo Oak (Tree #115) brought to the U.S. during President Abraham Lincoln’s administration in the 1860’s, the 500 year old Japanese Black Pine (Tree #262) donated by Mas Imazumi, and featured at the 1915 Panama-Pacific International Exposition in San Francisco, and legacy trees by famous bonsai pioneer artists; Harry Hirao, Jimmy Inadomi and John Naka just to name a few.

A group of dedicated volunteers is working to publish a book which captures the history of the garden thus far.

The book, which working title is “The First 25 Years of the Bonsai Garden at Lake Merritt”, will present the very best bonsai trees in the collection and to celebrate the many donors, supporters and volunteers who have contributed to the evolution of what is now a museum quality bonsai and suiseki garden.

Pre-sales for the book will start in mid-April, with a publication date scheduled for November 2024.

Living Sculptures – The Art & Science of Bonsai Demonstrations

As part of the exhibition hosted by the Sonoma Botanical Garden and Redwood Empire Bonsai Society, there will be three separate bonsai demonstrations conducted by REBS members.

Repotting a Bonsai January 27, 2024, from 10:00 to 11:00 a.m.

Styling a Bonsai February 24, 2024, from 10:00 to 11:00 a.m.

Collecting for Bonsai March 9, 2024, from 10:00 to 11:00 a.m.

Living Sculptures – Sonoma Botanical Garden (

Post-37th REBS Bonsai Show

Over 1,100 visitors were counted as attending the 37th REBS Bonsai Show over the weekend of August 26 and 27, 2023, at the Rohnert Park Community Center, Rohnert Park, California. Ryan Neil performed two morning workshops, daily demonstrations and a post-show critique of the exhibit trees. Ryan’s performance was superb! His demonstrations on yamadori Mendocino pygmy cypress and shore pine were both informative and entertaining to full crowds.

REBS will be pressed to outdo the bonsai show in 2024!

The exhibit trees were photographed by David Campbell and George Haas early Saturday morning using what light was available in the exhibit hall. All exhibit tree photos have been posted to the REBS website under the menu title GALLERY 2023 REBS Bonsai Show for your viewing.

San Jose Juniper exhibited by Bob Shimon