all these are Europan larches, Larix decidua. All are collected trees.
Most are still in early development.
1) 60 cm
2) 60 cm, pot by Josef Mairhofer
3) 25 cm, shohin
4) same, virtually repotted
5) 40 cm, pot by Josef Mairhofer
6) 55 cm, pot by Peter Krebs