Have you worked with Thuja Occidentalis before? I have one in my yard my parents were going to dig up and I asked if I could give it a prune this year, then begin the process of shrinking it down to a somewhat manageable size before digging it up in a few years.
This is a great looking tree already. Large for 9 bucks. Great steal. The one I am hoping to Bonsai was 7 feet tall before the trunk chop I did, and now sits at about 5'5''. The branch structure of these seem excessively difficult to bonsai. Mine was basically a huge cluster of small trunk-branches that went from the base of the tree straight up around the main trunk. The tree itself started as a root sucker so I think that's pry why it grew that way. I would like to bring the tree down to about 3-4 feet before even attempting to remove it from the soil. Does this species back-bud from the trunk readily? It had a bunch of small one or two node branches starting from the trunk, but if I ever hope to get it down to size, it has to back-bud extensively along the trunk. I am hoping the opening of the trunkline to light may stimulate some back-budding but don't know.