Looks like it could be a barberry seedling such as Berberis thunbergii var. atropurpurea.

Hi Esh_ga, thank you for your opinion. This plant is very small, it has grown to the place I have thrown old container soil. However it does not look like germinated from a seed but it looks like more from an old root or whatever it called. The stem is pretty strong and very deep rooted. I have Googled for the information of Barberry/berberis thungergii var but I did not find any similarities.

It looks very lovely and thinking to plant in a container whatever it is.
{{gwi:245736}}

I would like to know exactly what it is, any help will be appreciated.

Caelian

Lets have a stab at Cotinus

Yeah- I second the smokebush (cotinus)

I don't second the Cotinus - this is quite like multiple purple barberry seedlings I have seen. It should soon be easy to tell, as a barberry would start getting the characteristic stem and bud features. And it seems like the younger roots of these are yellow, same as with Oregon grape.

I've weeded many a Berberis seedling out of garden beds, and this looks just like them.

Thank you for all of your opinions. I will update when this plant is getting a bit bigger. Now I removed it from the garden and planted in a container.

Caelian