And that's a rather time consuming technique, right? So there you go.
BTW, I don't have any JM at the stage where I've had to use that technique. However, I've read/been told that when you pinch out those new shoots right at the start of the growing season, you will not get new shoots to grow that year, but you will stop the elongation of the shoot resulting in very short internodes. Are you saying that is not the case? That you will get new shoot growth the same season?
It depends on the cultivar of Japanese Maple. Regular seedlings, you will get new shoots.
I did with the forest Japanese Maple I bought from Bill V last year. I had to pinch that thing every day for three or four weeks in the spring!
Yes, it is a time consuming technique.