Let me tell you a few words about this hornbeam and its fate since my last post about it. The tree was sitting in its plastic bowl since 2011 (and I do not remember if the roots were worked since then).
This spring when I got a few new pots I dedicated one to the Gemini. It was about the right time. As you can see the "before" pictures buds were huge already. The tree was poted into a lighter mix with prevailing Terramol and pumice, as always with rough peat and Osmocote fertiliser directly added to the mix. Roots were edited during the occasion.
Then it was left untouched to regain strength. It sprouted vigorously right away and was cut back in spring already. Now the tree was edited, mainly the top of the crown of the taller tree, more light should enter inner sections of the crown to enhance back budding.
The second crown is developing slowly, and as I was writing several times about it, the plan is to have the second tree (which is lower for now) to be a bit higher than the high tree now. Development of the structure takes time but I hope I will get there in about 5 years from now. We will see.