1, 2 and3 is Cornus mas. Its age is 12 years. It already
is not in my collection.
4 is some kind of Qercus. Slowly growing tree. Its
age is about 15 years. The picture is old.
5 is Laburnum vulgare Gribs. Its age is 6 years.
6 is Abies Nordmanniana Stev. It grows in a rock and
is doing well.