chichi icho ginkgo question...

Three years ago a large chichi icho ginkgo was offered at our club auction. My friend brought the tree back from her annual trip to California; it was 8-10"(20-25cm) and she planted it in her garden for 10 years. When I purchased the ginkgo it was almost 30"(76cm) tall with a 6"(15cm) nebari.
Recently I've read this type of ginkgo produces aerial roots in old trees but bark trauma such as wire girdling will sometimes gender the "chichi" roots earlier. I'm looking for more information on producing these roots with other methods and when or if there is a good time in the life of the tree to experiment.

Best regards,
Norma


This is the tree this summer:

The fall colors are always beautiful. The tree before it's leaf drop and after:


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I've also had three small ginkgo planted in my raised garden for 2years. One seedling was from a neighbor's tree , the other is a small nursery tree I cut down to shohin size and another auction chichi icho from Lone Pine Gardens in Sebastopol.





The tree in the middle I found at a local Minnesota nursery and reduced the trunk to about 8"(20cm). It was my goal to grow a tree with a "fan" shaped top....but it did not want that shape and kept putting out shoots at the base! Now it has a nice little crop of trunks forming.

Hi Norma, this may help: http://kwanten.home.xs4all.nl/bonsai.htm#Ginkgo%20chichi%20bonsai

Hi Norma.

I think the chi-chi are a factor of age and genetics. I don't know any shortcuts, but I think being in a pot helps. Check out https://ibonsaiclub.forumotion.com/t5918-ginkgo-weirdness?highlight=ginkgo , a lot of people contributed info you may find helpful.

Love your tree, btw!

Thank you, Bruce and Russell.....!!!

The links are just what I hoped to find. I'm at a point in my bonsai growing that I enjoy experimenting and the ginkgo are so strange and lovely in their old skin. My Spring goal is to apply a girdling wire to one of the trunks of my small garden chichi and check out the roots of the large tree for possible tuberous roots. The use of the aerial root from an old tree to create a trunk was other-worldly .... wish I lived in a zone where this could be feasible.

Kind regards,
Norma