Acer buergerianum #1
This 20 years old pre-bonsai was ordered from Bonsai Plaza in the Netherlands. It was originally imported from Korea.
The tree got a slow start, maybe due to freezing conditions until the end of the first week of May. For the next few months the leaves were very small and unhealthy but as the weather warmed up it started growing very well with strong shoots.
I let it grow the whole season and pruned it after leaf fall to remove all the unnecessary branches and shorten the rest.
I will let it grow again a lot next year to improve the scars and thicken the main branches.