I have a Japanese red pine that I would like to start a black/red pine training program as described by the July 22, 2016 article by Jonas Dupuich.
My question is when should I start and at what point in the training process should I begin at?
I let the red pine grow a bit this past season to build up some energy for the new training.
I live in West-Central Michigan in zone 5b
The size of the red pine is: 13" high, 17" wide, 15" deep
The tree was repotted in 2019 April in the 8" square pot in Clay King soil.
I have never used this training process before as most of my conifers are white pine.
Any tips or help would be greatly appreciated moving forward.