So i'm totally new to bonsai I would be happy if you could give me some advice. A couple of hundred meters from where I live I have the opportunity to collect som trees (mainly birch - Betula pubescens ) from the wild. A couldn't find any tree that was ready to bring home and start working on right away but I think some might be good if I gave it a couple of years. So my questions is rather simple, should I just leave them in the ground and cut them where they grow? And if that is a good idea, do you have any advice where I should cut them? All pictures are potential trees I can collect and cut if advisable. 1-3 Birch, 4 Pinus Sylvestrus 5 Picea abies 6 Oak