Peter Tea - Demo on Maple Branch Development
July 15, 2016 @ 7pm
We're happy to announce that in just a couple of weeks Peter Tea will be visiting our club for a demonstration on how to improve branching on our maples.
High Temperatures for a Few Days
The weather has been very cool so far this year but now we're about to get some high temperatures. The leaves of maples, birch and many other deciduous trees can get badly burned so consider moving them to shader parts of your yard. You can provide shade by using shade cloth (available from Orchard Supply and similar stories).But don't drape the fabric directly on the leaves - leave some space between it and the tree's leaves because the fabric can get very hot, especially if you buy the black version. Alternatively you might place a layer of shade-cloth just over the top of your soil, making sure it overhangs the pot a bit.
You'll probably need to water at least every day now, and perhaps even morning and late afternoon. See our article on Watering for more information about how to check on your trees and when to water.
There's additional valuable information in Bonsai Care in the Time of Drought.
August Bonsai/Garden Tour and Potluck
This annual event will take place on Sunday, August 21. Michael Greenstein has graciously volunteered his home for the last stop and potluck. Thank you Michael! We are looking for two additional volunteers to open up their gardens for the tour. Contact John Mekisich or Rita Curbow if available.
Sponsorship of Club Member for GSBF Convention
The GSBF39 “A Bonsai Convergence: Gather at the Rivers” Convention will be held in Sacramento from October 27 thru October 30. Kusamura will sponsor ONE of our members with a paid full registration to the convention.
Full registration includes entry to all demonstrations, Headliner Bonsai Events, Suiseki and Viewing Stone Exhibit, GSBF Judged Bonsai Exhibit; eligibility to participate in the Benefit Drawing; Friday Banquet, Saturday Lunch, Saturday Banquet, Sunday Lunch; silent observer in all workshops; convention logo pin and a goody bag. You will also receive a 1-year complimentary subscription to Golden Statements Magazine.
Check out gsbf-bonsai.org for more details and contact Rita Curbow to apply for sponsorship. Only members who have never attended this convention are eligible for this sponsorship.
Harry Hirao Annual Scholarship
This scholarship is offered for use toward your education and development in the art of bonsai. As the recipient you would have 12 months in which to spend the scholarship to pay for work you do with a recognized California bonsai artist. Funds cannot be used to purchase bonsai or materials.
The deadline for applying for this $1,500 annual scholarship is July 15. For additional info, go to www.gsbf-bonsai.org and click on Education
What Tools Do I Need?
Bonsai tools are specialized, and there are a lot of different ones out there. If you're new to bonsai it's difficult to know which ones you need to begin - and which ones you might add later. We've got an article to answer those questions. See Tool Basics
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: June Tasks
By Dave Curbow
This is an excerpt from the revised and expanded Fertilizer Basics article.
By now you should have fertilized your trees. If not take a look at our Fertilizer Basics article on the website, it’s been revised. If you haven’t been fertilizing properly you may notice that some of your leaves are yellow.
The proper name for this condition is chlorosis or chlorophyll deficiency. There are variety of reasons for this condition.
|Location of yellowing||Diagnosis|
|On all leaves||Lack of nutrients - fertilize!|
|On younger leaves||Lack of iron or manganese|
|On older leaves||Lack of nitrogen or potassium|
|On leaf edges||Lack of magnesium and potassium|
|Between veins||Lack of iron and manganese|
Nitrogen deficiency will show up as up as chlorosis of the entire plant – leaves and needles turning yellow. Often this will show up on older leaves / needles first. A quick fix is to use a liquid fertilizer.
Phosphorus deficiency will cause a variety of symptoms that are difficult to identify. If the stem or underside seems to be purple, or you see a gray or brown-netted veining then that’s probably a phosphorus deficiency.
Magnesium deficiency may show up as chlorosis of the tip of needles. When the yellowing is seen primarily on new growth then it’s probably an iron deficiency. For magnesium deficiency sprinkle a teaspoon of Epsom Salt to the top of your soil. Because Epsom Salt dissolves so quickly you’ll probably need to do this a few times over a month. For iron deficiency sprinkle a tablespoon of Ironite over the top of your soil. This dissolves more slowly and one application may be enough.
Using a dilute solution of Miracle-Gro or VF11 in a spray bottle and mist the leaves. Do this every two weeks. If you’re using Miracle-Gro make sure you use 1/2 teaspoon (not tablespoon) per gallon of water. If using a typical spray bottle that would be less than 1/8 teaspoon. Fertilizer is made up of mineral salts and too much salt sprayed on leaves can cause them to “burn” or turn brown.
The best time to spray is early morning although you can also spray in the late afternoon. Temperatures are cool, best for absorption and there's less wind to blow the solution back on your clothes! The key is that the air temperature should be less than 80° F. Some articles say that most of the absorption takes place via the underside of the leaves and that light misting is better than heavy spray. The smaller the droplet size, the better the nutrients will absorb. Spray all surfaces of the leaves and stems.
June Meeting Recap
The idea of this meeting was for members to bring in trees that had originally been grown by Bill Scott, but now were owned by others. Some were in great shape, growing well after being repotted, fertilized, etc. Others still have a lot of work in their futures. But all have great trunks and are worth the effort.
Michael Greenstein talked with each owner about their tree, how they saw their tree developing and then used the tree for an audience discussion on the alternatives available.
A fuller description will be coming soon, but for now here are a couple of photos from that evening.