Velodog2
Chumono
Ah it's that hard line where the bark has been cut that persists for years if not forever in a ring above where the new roots emerge. I hate it.

I called up a Valavanis video on dwarf maples and took this screen shot of his Kashima. The line is very pronounced. Some of the other maples had it, some did not. I find it very vulgar. But maybe unavoidable. This tree is obviously a long way from a cutting, but the line is not going away soon. So maybe I shouldn't worry about it.30 years from now I will be bonsai full time. Will have plenty of time then...looking forward to the update.Give about 30 years, and I'll report back.