Answer: What fun! You must have done a good job at keeping the plant hydrated and protected from overly dry air. Sadly, it is not really growing. The growth for next year was already produced before the tree was cut but it was not readily apparent. It is kept tight to the tree as part of its portective mechanism against the cold winter. It has now swollen and elongated in response to the moisture and warmer indoor air temperatures. That makes it seem like the tree is "growing" but in all likelihood it will not continue to last indefinitely. Enjoy your experiment!
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