I want to cut off a trunk as mentioned at https://www.evergreengardenworks.com/trunks.htm. Can I do this with a 5' tall cherry tree or crabapple tree (like the ones shown in the image below)? The trunk diameters are about 1-2". I have not found any information about how to start a bonsai from such large bare root trees.
When I asked the lady at the nursery if I could chop off the trunk, she wondered if it would result in too many water sprouts. Would now be a good time to cut the trunk?