I am a big fan of Ume, but other Bonsai enthusiasts in my part of the world seem to have trouble making them thrive.
So I tried finding blackthorn in the wild since brexit made it impossible(?) to buy from UK. I have spent probably hundreds of hours driving and walking around meadows and pastures where I live, looking for Prunus spinosa.
They are abundant, but 99% are completely straight and young with shiny dark brown/red bark.
This plant has probably been chopped down by road maintenance crews during many years. It grew next to a country side road, farming area.
I dig this up May 2023 and black Bagged it, I pestered bonsai Dave and others for info om how to do it.