I use a technique called air rooting or layering. Once the tree has some leaves and is growing for the season, I take a cottage cheese container and drill 1/2'" holes about 1/2"from the bottom of the container opposite each other.
Then, I cut a slit down to the holes. I put the container on a low branch that has leaves, new shoots, close to the ground and close to the branch it is coming from. Then I scrape the bark from branch, add a few slits (in the direction of the branch, and sometimes I put a rooting hormone on the branch.
Then I slip the container onto the branch and use duct tape to close the slits on the container. So, the container is surrounding the branch with the sliced bark. Then I add my potting mix and in about a month, the container is root-bound and time to remove.
Cut the newly rooted branch close to the trunk (or branch) leaving a branch with a cottage cheese container attached. Remove the tape and remove the container. I use 5 gallon buckets with 3/16 holes in the bottom for drainage and let the cuttings grow in the bucket for a full year, wintering over in a protected location.
I brought 4 cuttings in 5 gallon containers from NJ back in April and transplanted them in August. They did not go into shock as I expected them, but maintained their structure until the weather got cold. The just dropped their leaves about 4 weeks ago. In the spring I expect them to be fine and start to push out new growth.
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"No amount of technology can defeat stupidity"