Twin Trunk Forms
In the twin-trunk form, two upright trunks emerge from the same roots and divide into two trunks at the base. Both trunks (trees) should exhibit similar shapes and characteristics having grown together in the same environment.
Twin trunk style Juniper
Trees are designed for the outdoors and thrive when they are exposed to seasonal changes of weather. The rain, wind and sun are all important to the tree as is the dormant winter period when the tree does not grow.
Twin trunk styles treat the two trunks together as one tree (Left, back on trunk1, right, back on #2, etc.) Main branches should not fall directly over each other; move one a little forwarding the pot and the other one back.
Twin Trunk Style (Soju Style)
Is a Tree with two trunks from a common root ball. The two trunks split just above the soil level, and one is usually subservient to the other, with both the trunks contributing branches to in a unified tree crown.
This twin trunk Larch,
Or how about this beautiful Maple in Fall colors.
The "Twin trunk" bonsai style. Bonsai style in which the tree has a double trunk which are joined at the base of the tree.
Sui ban
A shallow tray with no drainage holes that is commonly filled with either gravel or water and can house rock plantings.
The "twin trunk" bonsai style.
Soko ne
Bottom part of the root appearing directly under the trunk.
Left: A twin trunk Crape myrtle bonsai trained and later donated to the North American Bonsai Collection by Yuji Yoshimura. Right: A Maple forest penjing created by Wu Yee Sun.
Pyracantha - Twin trunk style
Seedling 1974 - Made into Bonsai 1980
Height 50cm ...
Bonsai Tree Styles: Twin Trunk - Sokan
Bonsai Tree Styles: Root Over Rock - Sekijoju
Bonsai Tree Styles: Bonsai Root On Rock - Ishitsuki
Bonsai Tree Styles: Bonsai Driftwood - Sharimiki ...
I haven't actually got a twin trunk Silver birch bonsai as yet but if the cuttings I tool recently strike, I'll be training a couple in that style.
This fig tree, a Ficus microcarpa twin trunk in the banyan style, is in the bonsai collection of the Matthaei Botanical Gardens of the University of Michigan. The common name of this species is Chinese Banyan.
The branches are cut back. I think I will develop the tree as a twin trunk so the small branch at the base is left.
We are left with the lower half of the tree. This is the piece we were after in the first place our top section is a bonus.
(1) Preparing the pot
(2) Potting media
(3) Repotting the tree
(4) Repotting a twin trunk mountain maple
(5) Repotting a Hemlock
(6) Repotting a Juniper sargentii
...
sokan - Japanese term for a twin trunk tree
shakkan - Japanese term for slant style bonsai
sifting
suiban - Japanese term for a shallow tray without drainage holes intended for the display of suiseki ...
(semi-cascade), kengai (cascade), sharimiki (driftwood), hokidachi (broom), benjingi (literati), sekijoju (root-on-rock), ishitsuki (root-on-rock), netsunanari (sinuous raft), ikadabuki (straight raft), neagari (exposed roots), soju (twin trunk), ...
 See also: Trunk, Bonsai, Style, Tree, Root
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