I found an outstanding deal for a Japanese Black Pine earlier this summer. The base was well developed with barking, a good candidate for a shohin tree. Buds and shoots at the base was abundant and could be selected for future branching. I decandled strong top growth at this time and thinned the shoots at the base to direct more strength to what would become branches.
The long sacrifice branch was cut this fall
Temperatures have begun warming up and some of my elms have already begun swelling buds. For Southern California spring is almost here meaning a good time to repot my trees. Based off advice from others and what I’ve read I proceeded to repot this black pine. What I did was a half bare-root repot where only one side of the root ball is worked and replaced with new soil. Doing so allows the undisturbed side to maintain the vigor of the tree until roots in the new soil becomes established. In the following year or 2 you can than bare-root the other side of the root ball thus establishing the entire root mass in a more open “bonsai mix.” The foliage at this time is also a bit yellow. Because of the high amount of winter rains as well as the grass/moss that established on the surface this black pine has been receiving too much water. The color should reestablish to a dark green with better watering as well as feeding.
The tree was then potted in a mix of scoria, pumic, diatomaceous earth, and some zeolite.
The longest branch will take over as the new sacrifice and will remain for the next 3 years if not more. After the tree establishes itself I can begin successive stages of refinement and branch selection. I will need to read up on decandling practices as well as the decandling timing specific to my area. In time, this should be a pretty nice tree.
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