Annual Garden Tour & Potluck BBQ – Saturday, August 17

No August Meeting

by Lynne O’Dell

As is usual at this time of year our club takes a break from formal meetings and instead visit the gardens of a few of our club members to see their trees and then have a picnic.


Monthly Tasks

Each month there are a number of tasks you need to do to your bonsai – from repotting, to fertilizing to spraying for pests. We have put together a checklist, customized for the San Francisco Bay Area to help you. This checklist is adapted from earlier work by Mitsuo Umehara.

This month: August Tasks


Intermediate Workshop – Saturday, August 24

by Dave Curbow

Another opportunity to work with your trees while getting advice from other Kusamura members.

Location, Time and Cost

We will be meeting in the rear parking lot of St Mark’s Episcopal Church – our usual location for monthly meetings.

Please be there at 12:45PM ready to setup tables and get to work soon afterwards. We will start cleaning up at 3:45PM.

To help offset the cost of renting this facility we are asking everyone who attends to donate $10 by using the on the event page.


Recap of July 19 Meeting – Sam Tan – Native Juniper Styling

by Lynne O’Dell

It was a treat to have Sam with us for an informative in-depth casual question and answer discussion of native Junipers. Sam brought in a refined Sierra juniper that he will be showing at the Pacific Bonsai Expo in October and two Rocky Mountain junipers in differing stages of development. One had been repotted and had an initial structural styling and wiring and the other is in very early development and needs more time to grow more foliage and become stronger. With audience participation, we discussed the definition of native vs Japanese Junipers and their characteristics.

Japanese Junipers
Shimpaku (ex. Itoigawa, Kishu) and procumbens nana have been cut from the forests in Japan and cultivated and propagated over centuries to produce superior varietals. Sam feels that in 100 years the rougher characteristics of our native junipers could be refined to a level similar to what evolved in Japan if someone decided to work on this. Japanese juniper pads develop faster with more mounding characteristics than our natives which influence the timing of pruning. When pruning shimpaku you wait till the tips run. For the natives, they need to run to build strength.

Native Junipers
Rocky Mountain Juniper (RMJ): Its fan-like blueish foliage is aromatic and is more fine and “floppy” than others. Some people find the scent unpleasant or too strong, it is distinctive from other junipers. Branches are more brittle and have finer striations in the dead wood.

Sierra Juniper: This also has bluish foliage (although Sam feels the color can be dependent on the rowing environment) and is more coarse than the RMJ and thickens faster. It has more blurred boundaries between dead and live wood than the California junipers.

California Juniper: Has a wild structure with more coarse foliage compared with RMJ. Branching has wider angles compared to RMJs that are more acute and typically styled with more deadwood. Their roots are slower to develop, and often need structural help to support the tree.

Others: Western Juniper, Utah Juniper, and Hollywood Juniper (to name a few).

After the break Sam described how he will prune the RMJ that needs a second round of pruning and wiring. He clearly described how different approaches are used with trees at varying stages of refinement. Unlike Japanese junipers, running native junipers send out longer runners before the rest of the pad needs to be pruned so wait longer before pruning. After taking the bottom foliage off the pad Sam uses a combination of pruning and directional wiring to create a pad that has more vertical volume, so it appears fuller. He tries to break up the larger pads into multiple smaller pads thus resulting in more interesting visual energy.
Salient Points:

  • Growth of course juvenile foliage can be avoided if you prune less than 50% of the foliage at any one time.
  • Regarding showing a tree with wire- If the wire will bring out the tree’s best elegant aging form, its “mochikomi” (the sense of years of cultivation as bonsai in a pot) then leave the wire on.
  • Sam uses what the tree gives him rather than grafting additional branches from other species.
  • He admitted to enjoying the challenge of creating an elegant “Long” tree and has many in his collection. He feels the term “bunjin” has specific Japanese design constraints that he does not hold to.
  • His soil mix is 1-1-1 akadama-pumice-lava and he uses biogold fertilizer for his conifers.

BGLM Volunteer Appreciation Day

by Suzanne Muller

The Bonsai Garden at Lake Merritt is celebrating all volunteers who have donated their time to the garden. Volunteer Appreciation Day in the Bonsai Garden at Lake Merritt is September 2, 2024, Monday, Labor Day. We will open the garden to all volunteers from 11AM-2:30PM to celebrate you. We will provide food and drinks. There will be prizes awarded to those who have the most hours contributed to the garden.

The party will be catered by Ann’s Catering from Rick and Ann’s restaurant in Oakland. There is a signup sheet located in the garden. We are asking for you to sign your name and select the food type you are interested in eating. (meat or vegetarian). This is for a head count only in order to know how much food and drinks to order. If you no longer volunteer at the garden, but want to attend the celebration, please contact me in order to get your name and food preference added to the list. We look forward to celebrating with you!

Cell Phone: 925-787-1349
Email: queueinteriors@comcast.net


Recommended Link

Bonsai Wire Podcast -Eric chats with Sam Tan about California Natives

July 22, 2024 – 53 minutes 47 seconds
https://www.bonsaiwirepodcast.com/1276571/15458869-eric-chats-with-sam-tan-about-california-natives
Join host Eric Schrader in conversation with Sam Tan about Coast redwood and Monterey cypress.

Newsletter Editor: Jenn Tan

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